Characters that always say something...
... sarcastic? Hang on. I'm sure you can name hundreds of characters like that, but I'm specifically talking about those who sound like they're doing a stand-up routine. I'm also looking for characters that seem to be the movie/show's only experts in pop culture. These are the ones I can think of at the moment:
-JUNO from JUNO.
-A.L.F. from A.L.F.
-TED from TED.
-ROGER from AMERICAN DAD.
-KUZCO from THE EMPEROR'S NEW GROOVE.
-Most of (or all?) the characters Rodney Dangerfield played.