16. Tyrese Gibson
Worst Performances: Baby Boy (2001), Annapolis (2006), Death Race (2008), Legion (2010)
Here's something we thought we'd never utter: Tyrese should return to music full time. Some actors seem to get work simply off their male-model looks—what better way to explain how Gibson manages to show up in more and more C-grade genre films (Death Race, Legion), in which he's routinely the worst actor in the lot?