4. Nizam (Prince of Persia)
Disney's The Prince of Persia would not mark Ben Kingsley's only role in an ill-judged video game movie adaptation, though his performance as Nizam (thankfully) certainly isn't the worst of the two. The movie itself was terrible and the role of Nizam was not much better. Aside from the fact that Kingsley is given a pretty dull character to work with here, he also seems incapable of working his magic to at least do something interesting with it. Kingsley merely exists as an extra here, popping up to drop exposition and pose a genetic threat. It's good to see an actor of Kingsley's caliber taking chances in his career, but this is another one he didn't need tacked to his filmography. Here, he serves as "just a bad guy" - and he's deserving of so much more.