Katherine Heigl. She is a case study in how to fuck over your own career. She left Grey's Anatomy, which made her a household name, shit talking it on her way out. Then she just signed up for a string of bland forgetable rom-coms. Nothing wrong with that, but you gotta diversify your resume if you're going to survive. Being the "It Girl/Guy" in Rom Coms is a short term game. By the time she wanted to move on to something else, she had the reputation of being hard to work with. Tried to come back to TV and has flopped there, and might flop again next year. If she had just left on better terms, I think more projects would have been willing to "deal" with her post 2010.