Sorry, Ashton Kutcher, you're not the only actor who tweets.
A-Listers such as Leonardo DiCaprio, Jim Carrey and Jackie Chan have all discovered that 140 characters can be an effective way to hawk their films, promote their favorite charities and even open up and show a side of themselves we don't often see. (Russell Crowe, we had no idea you were such a softie.)
We've sorted them not just by which stars deserve your attention, but also based on the type of tweets that are their stock in trade -- politically conscious, insider scoops, cute and fuzzy, reliably hilarious ... and purely promotional,
(Also see our previous guides: 30 Must-Follow Movie Insiders, 30 Must-Follow Music Insiders, 50 Must-Follow TV Insiders, 25 Must-Follow Media Insiders, 25 Must-Follow TV Superfans)
POLITICALLY CONSCIOUS
Leonardo DiCaprio
@LeoDicaprio
Why you should follow: A forum for the eco-minded star to promote green causes. Also a good source of promotional material and interviews regarding Leo's mind-bending "Inception."
Recent sample tweet: "Heard about solar panels on the #Inception set? http://bit.ly/d6xcdz You can see pics on my FB page: http://bit.ly/dsH18x @ecorazzi"
Be prepared for: Shut up about the ice caps melting and give us some dish on Bar Refaeli.
Edward Norton
@EdwardNorton
Why you should follow: Never shy about his opinions, he talks up the Gulf oil spill, New York political races and the environment. Don't worry, there's some dish on the Hulk/Avengers debacle with Marvel too.
Recent sample tweet: "I'm all over FishPhone. Great idea. Used it to avoid Chilean Sea Bass last night. Almost extinct. Never knew. Farmed salmon a nightmare too"
Be prepared for: Shout outs to Tony Robbins. NBC should send him a fruit basket.
Kal Penn
@Kal_Penn
Why you should follow: Surprisingly knowledgeable about politics and history. Then again, he did have a year-long gig in the White House.
Recent sample tweet: "Upset brown dude yelled: "You suck! It's because of YOU that I get called 'Kumar' everywhere I go!" Me: It's better than 'Apu' isn't it?"
Be prepared for: Obama worship.
Danny DeVito
@Danny_Devito
Why you should follow: Super responsive to fans -- and super profane. Uses Twitter to promote his anti-war views.
Recent sample tweet: "Get out of Afghanistan Bitch!"
Be prepared for: Twitpics of DeVito's troll feet.
INSIDE SCOOP
Ian McKellen
@ianmckellen118
Why you should follow: The source for the best intelligence on the long-delayed, much anticipated "Hobbit" movie.
Recent sample tweet: "I asked all I met at WETA when 'The Hobbit' starts shooting.
