Ashton Kutcher has a very high-profile new gig on 'Two and a Half Men,' but the celebrity prank show that helped put him on the map is making a comeback with someone else at the helm.

That's right: 'Punk'd' is back at MTV, according to Access Hollywood, and tween pop idol Justin Bieber is behind the elaborate hidden camera surprises for the first new episode.

Last year, rumor had it that Bieber was in talks to be the show's permanent new host, but now MTV is mixing things up, having a different celebrity act as host for each episode.

So who did the Biebs punk on Friday in Los Angeles for his episode? None other than his pal Taylor Swift, just days after he joined her on stage at her "Speak Now" tour stop in L.A. to perform a duet of his hit song 'Baby.'

Now that he's been officially replaced by Ashton Kutcher on 'Two and a Half Men,' Jimmy Fallon knows exactly what Charlie Sheen's next move should be. He showed us on 'Late Night' (Weeknights, 12:37AM on NBC) by taking his Charlie Sheen impression into Ashton Kutcher's back yard.

If Kutcher is taking Sheen's show, then Sheen should just take Kutcher's. So that's exactly what Fallon had him do in a parody of 'Punk'd.'

This time, it's Charlie Sheen doing the punking, and this time you don't get 'Punk'd,' you get Sheen'd.' Oh, and because it's Charlie Sheen, none of it makes any sense at all.

Nope, you're not getting 'Punk'd.' Teen singing sensation Justin Bieber will reportedly host a new version of MTV's celebrity prank series.

According to Vulture, the Biebs will be the new host of the Ashton Kutcher-created series. Look for Kutcher to remain on board as an executive producer. No word on whether trucker hats will be involved.

Kutcher created the show in 2003 and was involved in pranking -- sorry, punking -- his celebrity friends. He appeared in some sketches, but later on only introduced the segments. The series ended in 2007 after 84 episodes.

Talk about black comedy: There is a television show currently airing in Iraq that pranks celebrities by planting bombs in their cars, then films them via hidden cameras as they are stopped at a security checkpoint and accused of terrorism.

We're not kidding. This show actually exists. They wrote about it in The New York Times.

Parenthood was supposed to be one of NBC's fall shows this year. They really could have used it too, since it's actually good, and "good" seems to be in short supply at NBC these days. However, star Maura Tierney had to stop filming early on due to health reasons. Eventually she needed to leave the cast permanently, and re-shoots had to be done with her replacement, Gilmore Girls' Lauren Graham.

NBC has just released the first two promos for Parenthood, which is now premiering in March, after the Olympics. The first one features Graham as Sarah, a single mom to two difficult teenagers. Her daughter is played by Arrested Development's Mae Whitman. It's a short clip, but it's a pretty good indication of the character, which is basically what would have happened to Lorelai Gilmore if Rory hadn't turned out so perfect.

MTV is hooking up with That '70s Show's Fez (Wilmer Valderrama) to develop a scripted comedy that takes a look at celebrity worship. The series, titled Baby Dolls, which will be filmed in documentary style, is told from the point of view of "a naive and jaded personal assistant to a young actress." Naive and jaded? So this person has a lack of experience, judgment or knowledge about the world but is hardworking and completely worn out by all the energy he or she puts into the job? Sounds like a job for Kenneth the Page from 30 Rock!

Or I guess Valderrama could play the role himself. He certainly played the role of "naive" to a T in That '70s Show and hasn't been doing much TV work outside of getting Punk'd by fellow '70s co-star Ashton Kutcher from time to time. Doesn't he know that there's a legion of Fez-natics out here just waiting for him to grace our screens again. Hell, keep it the same character ... Fez twenty years later working as a personal assistanta. "Would you like me to powder your breasts with my nose?"

I always get depressed this time of the year because I know that along with the summer months come the end of all my favorite TV shows. In some cases, they go away forever and I am forced to replace them with lesser quality summer shows. This season, however, I received some truly happy news. Wedding Crashers has been canceled!

I am so over the so-called prank shows that pull the most harmless candy ass pranks. Shows like Wedding Crashers, Punk'd and Girls Behaving Badly are the modern version of Candid Camera. The difference is that Candid Camera did it first and in the early days of TV, it was truly groundbreaking. It is sad that fifty years later someone still thinks that practical jokes make for edgy TV.