41. Mark Wahlberg
Worst Performances: The Happening (2008), Max Payne (2008), The Lovely Bones (2009)
When Mark Wahlberg's on point, he's still no powerhouse, though he can at least hold his own playing a tough guy who closely resembles him (The Departed, The Fighter). But when he's off? Run for cover, preferably nowhere near a movie theater. At his worst, Wahlberg lacks any sense of magnetism; he's simply there, scratching the emotional surface but never breaking through enough to sell a scene. And then there's The Happening, an all-around monstrosity that features a Wahlberg performance so enormously bad that it alone would solidify his placement here if not for his other transgressions.