John Cho and Kal Penn are starring in their third 'Harold & Kumar' film this holiday season, but that doesn't mean they do everything together. John Cho clarified this for Jay Leno on 'The Tonight Show' (Weeknights, 11:35PM ET on NBC) when the host asked him if he'd ever worked in the White House like Penn did.

Cho has been to the White House, though, and got a special treat while he was there. Both he and his father were born in Korea -- his father walked from North to South when war broke out -- so they were honored to met the president of South Korea, and then the president of the United States.

While some shows have lured famous movie stars into leading roles, other shows are taking a more temporary approach this fall with big-name guest stars booked for short-term stints on the small screen.

Fall TV will host several major reunions that you definitely won't want to miss. Terry O'Quinn will head back to the island for a stint alongside former 'Lost' costar Daniel Dae Kim on 'Hawaii Five-0,' while Ray and Debra are back together (sort of) when Ray Romano stops by 'The Middle' to visit his former 'Everybody Loves Raymond' costar Patricia Heaton. And let's not forget 'Buffy the Vampire Slayer' alums Charisma Carpenter and James Marsters playing a married couple on an episode of 'Supernatural' this season.

Wanna know who else is heading to TV this fall? Check out some more of the biggest and best guest stars, including 'The Wire' alum Michael K. Williams (Omar!), Oscar-nominated actress Patricia Clarkson and crooner Josh Groban in AOL TV's fall guest star gallery.

There's a hurricane coming -- have you heard? As Irene bears down on the East Coast, our best advice to you is to hunker down and watch these videos. And even if you're not in the storm's path, you probably shouldn't miss these epic TV moments.

This week's Top 5 features Letterman responding to a death threat from a jihadist, Craig Ferguson catching Kal Penn up on pop culture, the epic throwdown between Ronnie and the Situation on 'Jersey Shore,' Ashton Kutcher refusing to tell us how Charlie Harper dies and Danielle Staub and Jake Pavelka yelling at each other.

It's enough to keep us inside for days. Check out the videos after the jump and vote for your favorite in our weekly poll.

Kal Penn left Hollywood two years ago to get involved in politics, and wound up working within the Obama administration. Now he's back and looking forward to a role on 'How I Met Your Mother.' So he went to 'The Late Late Show' (Weeknights, 12:37AM ET on CBS) for a quick pop culture refresher.

Well, it was supposed to be a general plug for his return and his 'HIMYM' role, but that's not how things work on Craig Ferguson's show. They talked first about Penn's time in the White House, where he indicated he'd like to stay involved in both careers as possible. Especially with the re-election coming up.

Kal Penn left acting and his series regular gig on 'House' two years ago to move to Washington, D.C. and work for the Obama administration. Now he's back in Hollywood ... just don't expect to see his now-deceased 'House' doc haunting the halls of Princeton Plainsboro anytime soon.

Penn is returning to TV with a major role on CBS' 'How I Met Your Mother,' according to TVLine.

Penn will reportedly be leaving his post of associate director in the office of public engagement at the White House later this month, and their 'HIMYM' source says he will play a new love interest for unlucky-in-love Robin Scherbatsky (played by Cobie Smulders).

Although a show rep declined to comment on the casting scoop, we can't help but get excited. Not only would this mean a new man for Robin, but it would also mark Penn's reunion with series star Neil Patrick Harris, who played "himself" in Penn's wildly popular 'Harold & Kumar' movies.

He starred in 'Aliens in America,' had a recurring role on 'Nip/Tuck' and is now a regular on 'Rules of Engagement.' But Adhir Kalyan keeps getting mistaken for another actor. He kindly corrects people -- most of the time.

On a recent road trip along the California coast, he stopped off for an afternoon at the beach, he said on 'The Late Late Show' (weeknights, 12:37AM ET on CBS). When he later popped into a local shop, the attendant seemed to know all about him, saying, "You're the guy everyone's been talking about ... We heard today that there was an actor on the beach, and he was Indian and that he was in comedy."

But then "10 minutes into the conversation she says to me, 'Yeah, so I heard you just finished doing the third 'Harold & Kumar','" referring to actor Kal Penn. This time Kalyan took a different approach.

The only way Fox will air President Obama's prime time address next Wednesday will be if he joins the glee club. No, seriously, if the Prez could sing or dance with the kids at McKinley High School on the new Fox series, Glee, he'd have a better chance of getting air time than he does as the Commander in Chief. Fox is not expected to show President Obama's address to Congress.

Fox has already shown an unwillingness to interrupt prime time for President Obama. Back in March, the network chose not to air a press conference. To be honest, Obama has been on TV a lot more than President George W. Bush. All that prime time real estate is expensive, and the networks have squawked about how often Obama has requested the air time.

As a member of the media elite, I tend to run in some pretty impressive circles. Some days it's a Yankees game with Lorne Michaels, Fergie, and Jason Hervey. Others, it's World of Warcraft with Michael Keaton and Val Kilmer (hint for dealing with those two: do NOT wonder aloud who the best Batman of the '90s was).

Obviously, writing a bi-weekly column that has readership literally in the hundreds carries with it a lot of perks. But it's not all fun and games. My place as America's foremost pop culture commentator ("It's like Chuck Klosterman and Andy Warhol had a baby!" reads the blurb I'll ask my editor to put on my book should I ever write one) means that my inbox is constantly being spammed by other members of the media asking for advice.

Instead of answering those emails privately, like good manners and the explicit instructions of many of the emails demand, I figured I'd share both the emails and their answers with you, my loyal readers...

If you're like me, then you're still reeling from the big shocker that happened in last night's episode of House. I spent the entire episode with my mouth hanging wide open, just sputtering, "what?" over and over again. After the episode ended, my boyfriend and I spent a good half an hour arguing about what really happened. Was House's theory correct, or was it just wishful thinking?

I thought the episode made it pretty clear, but there was definitely an element of ambiguity when it ended. Today, House executive producers David Shore, Katie Jacobs and, uh, a certain actor from House, held a conference call to answer some of our burning questions, like, you know, "what the hell?"

(S5E15) "You're a wuss. Part wimp, part puss." -House to Wilson

We get yet another religious patient this week. Father Danny, who is running low on the big F, ends up in Cameron's ER after getting a late-night visit from Jesus. House initially grabs the case as a way to mess with Foreman and Thirteen, but it turns out that Father Danny might have a real problem.

We've explored religion before on House, but this one of the times when it hasn't worked so well. Father Danny's lack of faith is a good opportunity for Taub and Kutner to engage in a philosophical debate, about God, faith and the nature of suffering, but this all feels like ground the show has covered before.

(S5E13) "What's going on with everyone today?" -Kutner
"It involves House, Foreman and Thirteen which means it's either dumb, dangerous or tragic..."-Taub

Is House actually becoming a nice guy? One of the most interesting things about this episode was the absence of his trademark jerkiness. Whether he was dealing with an upset Cuddy or trying his best to counsel a disbelieving Foreman, House not only seemed sympathetic, but empathetic as well. I was surprised by the genuine concern he showed for Thirteen and Foreman during the blindness scare and his willingness to be Cuddy's whipping boy.

Again, the patient of the week wasn't very memorable to me. I find myself not even really caring about them aside from how their illness will reflect the doctor's personal problems. That conceit has gotten so obvious it's hard too look past it and see the patient's as real people who are suffering. Is anyone else having this problem?

(S05E12) Last spring, I went to hear Ira Glass give a talk about his popular NPR radio (and now TV) show This American Life. He outlined the formula for the show's success, and he also talked about House. Websites have documented the formula for every episode: Every episode is essentially the same. So, why does it work every time? Last night, I was hooked by Emmy the trainer rolling down stairs, and I was then hooked by the discovery of her surgery. I know that every single diagnosis and test and treatment is going to be bunk until the big, strange reveal at the end. However, it's almost like I am the same as House with my need to know what that weird reveal is going to be.

We're far enough removed from Buffy's original run now that there really aren't any surprises left for most of us. By this point we've seen the episodes so many times through DVD, streaming, and syndication that the story has been told. There's still something to be gained from watching again, though.

A little water under the bridge has given all of those bit-part actors that were once feeling lucky to book a Buffy gig a chance to move on to bigger and better things. I'm still occasionally surprised when I catch an old Buffy and realize just who that is standing in the background. After the jump, nine of my favorite small part players from Buffy that went on to bigger successes.

(S04E16) "Her heart won't stop racing. No idea what's causing it." Doctor in inferior hospital.
"Are you sure it wasn't the bus that landed on her?" House.

The season finale of House packed a wallop. I let my Tivo get ahead of my watching it so I wouldn't have to see the commercials, and I had barely begun the episode when my next-door neighbor burst into my living room exclaiming, "Have you seen House???" We barely had time to hit the pause button while yelling at her to leave and leave quickly without saying anything. But that is the kind of impact this kind of episode has. The season finale, which started last week, covered a bus-load of big themes: fear, wish-fulfillment, anger, risk-taking, the nature of friendship, remorse, and love. The episode was written by four writers, including producer David Foster: that was one of my first clues that this episode was going to be significant. They called in the big guns.

[S04E14] "You don't deserve to be happy." House to Wilson.
"And yet I am. You?" Wilson to House

House treats the symptoms, but he doesn't treat the whole person. He doesn't even claim to. He often makes a clear point that he doesn't care. House likes medicine because he likes to solve puzzles, and what greater consequences can a puzzle have than a human life? But ultimately, even someone dying doesn't matter unless House can't figure out the puzzle.

So, if the above paragraph is true, then why does House go out of his way to kidnap a soap opera star he believes to be dying in order to save his life? Is it really because he can't stand the idea of not watching his soap? I don't think so; he even encourages angsty actor Evan Greer (Sex and the City's Jason Lewis) to quit if he's not happy... well, sort of. But, back to the question: If House doesn't care, then why bother? Because it's a puzzle he can see daily, right in front of him, and he has to solve it. Apparently he has made multiple calls about it, because the actor knows who House is, so House simply takes matters into his own hands because that is what House does. House lives a life without consequences.