Buzz News Roundup, 3/12

- Two more have joined the cast of My Sister's Keeper: Jason Patric will play the girls' father and Thomas Dekker (formerly Zach on Heroes) will play "the older sister's boyfriend and a fellow cancer survivor," writes Hollywood Reporter.
- Online video service Hulu is now open to the public, USA Today reports.
- ComingSoon has the news that five more actors have joined the cast of the Shopaholic movie, including John Lithgow and Kristin Scott Thomas.
- Since Janet Jackson has the flu, Mariah Carey will appear on this weekend's Saturday Night Live, the Associated Press reports.
- Arrested Development creator Mitch Hurwitz is writing an animated version of the Australian comedy Sit Down, Shut Up for Fox, writes Zap2It.
- According to Billboard, Goldfrapp, Kate Nash and several others have joined the lineup for this year's Coachella festival.
- The Gossip Girl Q&A from the upcoming Paley Festival will be webcast live on March 22, TV Guide reports.
- Billboard reports that India.Arie will star in a Broadway show produced by Whoopi Goldberg.
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