My boyfriend has to watch everything Edward Norton is in...I really don't have to watch anything that a certain someone is in, like I think Johnny Depp is the best actor, but I don't like some of his movies so I don't watch all of them.
Even though he might not be a great actor, I'm a huge Kevin Smith fan, and have all his movies (the one's he's made, and the ones he's acted in lol)...except Zach and Miri Make A inappropriate contento
Other than that, I don't usually rent/see a movie just because so and so is in it. But I love Sandra Bullock I'll watch anything with her in it at least once.