Demi Lovato will guest on an upcoming episode of 'Grey's Anatomy.' The Disney teen sensation broke the news yesterday on Twitter, saying, "I'm so thrilled to announce that this week I'm shooting Grey's Anatomy!!!!!!!! :D AHHH!!!!" Further details on Demi's guest spot have yet to be revealed, so keep checking Twitter. [PEOPLE]

More casting news after the jump.

Last night, we learned the Top Ten who'd be going on the 'American Idol' tour this summer. Out of all the contestants who made it into the Top 24, I'm ok with who's left. There are really only a handful of standouts for me -- Crystal Bowersox, Michael Lynche, and Siobhan Magnus -- but all of the contestants have their moments.

What I love about this season is there's such a diverse group of singers, each with their own fan base. We've got Crystal's bluesy-folksy vocals, Katie Stevens' teen pop, Michael Lynche's soulful blues, Casey James' guitar rock, Aaron Kelly's mad vocals (I'm convinced he can sing anything well), Tim Urban's Zac Efron vibe, and Siobhan's edgy pop-rock. Lee DeWyze, Didi Benami, and Andrew Garcia don't really pop out at me, but there's still time.

Did the right person go home last night? Let's talk about it after the jump.

Looks like the Disney Channel underestimated the power of Nickelodeon's iCarly. Their attempts to squash the possible threat to their Hannah Montana empire were squashed, however, when a special iCarly smashed the second episode of JONAS, the new star vehicle for the Jonas Brothers. So to make themselves feel better, and despite what Miley Cyrus may have been saying, the show will go on. Disney has picked up Hannah Montana for a fourth season, as well as Demi Lovato's Sonny With a Chance for a second.

As for JONAS, it's already been yanked from Saturdays where, despite an impressive debut, it got slammed in its second outing by iCarly. So now, it's joining the Disney Sunday lineup, where it can nestle snugly behind Hannah Montana and Sonny With a Chance. This does create a powerhouse Sunday night for the network, while protecting the two newer shows with the power of Miley Cyrus.

(S08E09) I was jarred by the beginning of the show. I flip the channels and realize that right after the credits, the show started off with Lil Kim and Derek's performance. Wait, what? Gilles and Cheryl scored better by three points. No matter.

I'll admit that I skipped the performance in favor of Adam Lambert. His performance on American Idol was more interesting than five minutes of a dance I saw before. In the recap, we learned that last night Melissa ripped her dress, which is one of the reasons why she was thrown off.

Admit it ... you're obsessed with the Jonas Brothers (known in the tween world as the Jo Bros) and Miley Cyrus (known in the tween world as -- Miley Cyrus). You wake up in Hannah Montana pajamas, you eat your cereal with your Miley Cyrus spoon, and you make sure you have safe sex with your Jo Bros' IUD. But, you need more to satisfy your craving for Disneyfied bubblegum rock and pop. Thing is, you fear that you have exhausted all of your resources.

Have some faith, slightly creepy one. Fact of the matter is the Disney Channel is watching your back. Starting at 5:30 pm tonight, the network will be premiering the Jonas Brothers' newest video, as well as Miley's first video from her new Hannah Montana movie. If that weren't enough to sustain you, Disney will be broadcasting the Kids Inaugural: We Are the Future concert, which will feature not only the Jo Bros and Miley, but Demi Lovato and Bow Wow (no longer 'Little').

See? Everything will be okay. Now you can get dressed in your High School Musical pants suit and head out to your job as CEO of a multi-billion dollar company.

[information courtesy of Cynopsis]

I'm just full of Disney news (or full of something) this week, aren't I? On Monday I asked the question of what happened to the Playhouse Disney schedule. This time around I'm going to talk about the entire Disney Channel. Not just the cable network, but the website as well. For both are tops in their respective outlets.

Well, tops when it comes to kids programming -- an area of entertainment that continues to grow on a daily basis. For 2008, Disney Channel was top of the heap in a number of areas. Not only was primetime programming number one for viewers ages 6-14, but the premiere of the network's newest musical, Camp Rock (which introduced us to Demi Lovato), became cable's top entertainment broadcast of the year. Cable's top animated debut also went to Disney Channel with the premiere of Phineas and Ferb.

I have a tween-aged girl in the household, so we watch a fair amount of Disney Channel. I'll come clean and even announce that Miley Cyrus, The Cheetah Girls, and Demi Lovato share iPod space with AC/DC, Jeff Beck, and Aerosmith. Hey, those Disney Channel tunes are catchy, and they're easy to dance, I mean, walk to. I draw the line at the Jonas Brothers, though.

But about 10 minutes into the new Cheetah Girls: One World movie the other night, my daughter looked at me and said, "I was really hoping these Cheetah Girls movies would get better." Yeah, me, too.

I actually liked the first two movies, in 2003 and 2006, respectively. The second, directed by High School Musical alum Kenny Ortega, was a downright cute tale about the Girls' escapades in Spain.