Followers: 358,226

The cool thing about the famed Juno writer's Twitter is that she doesn't lace it with the made-up slang you'd expect from her. Obviously, her writing has grown, as seen in Young Adult. But she's a genuine fan of comedy, which shines through her tweets. She's supportive of the people in the industry, and can tweet some of the funniest one-liners we've seen in a long time.