Also, a lot of people are naming character actors. True, character actors generally aren't good actors but they generally aren't bad actors.
When I go into a Will Ferrell or, ugh, Rob Schnieder movie (ok, he's a bad actor) I generally know what to expect.
Just like that kid from Juno and Zombieland, he knows how to play one character and he plays it well.
Nothing really wrong with that, it may suck for them since they can't branch out, but meh, at least I know what to expect in their movies.