Today in Tweet Beat, with the Oscars being so boring and Charlie Sheen being, um, Charlie Sheen, he's the main topic on celebs' Twitter accounts.

Today in Tweet Beat, Carrie Fisher is the new spokeswoman for Jenny Craig. Plus, celebs are all over this Sarah Palin "blood libel" thing."

Today in Tweet Beat, fellow comedians get somber over Greg Giraldo's death, and Teresa Giudice denies reported feud with her sister-in-law. Plus, an update on Lil Wayne's prison release.

Today in Tweet Beat, Stephen Fry says that Twitter isn't making people dumber, 50 Cent proves that he's dumb with or without Twitter, and Erika Christensen has a run-in with Stephen Baldwin.