jimmy fallon

Though it was once derided as a platform for oversharing geeks, Twitter‘s become so big amongst celebrities, we find ourselves surprised when a boldface name doesn’t have a corresponding Twitter handle. Be-Kangol’d movie star Samuel L. Jackson is the latest celeb to join the social network, and signed up with a little help from prolific tweeter Jimmy Fallon on Tuesday’s ‘Late Night.’

In honor of the U.S. Open, Jimmy Fallon mimicked pro Roger Federer in a skit called “At the Bar With Roger Federer” on ‘Late Night.’