Rumor has it that Heigl wants out of her "Grey's Anatomy" obligations. One can't blame the actress for wanting to focus her attentions on a film career, especially since she's proven to be a big screen draw with "27 Dresses" and "Knocked Up." However, one can't help but think of other TV stars failing in their movie careers.

Jennifer Aniston has made a few respectable movies, but she's never been able to pull off blockbuster numbers. Mischa Barton wanted out of "the O.C.," and when the series ended, well -- have you seen her in movie yet? We all loved Kristen Davis on "Sex and the City," but after six seasons as Charlotte, who could see her as anything else? Did anyone catch her in "The Shaggy Dog" or "Deck the Halls"? Exactly.

Do you think Heigl has real star quality to make it was the next Meg Ryan? Would it be a smart move to preemptively leave a hit show? [MSNBC]