While most Jimmy Fallon fans eagerly awaited another 'Timberlake Tuesday' they seemed to have forgotten other celebrities also visit his show.

There to promote a new movie, Joseph Gordon-Levitt and 'Hello Ladies star Stephen Merchant, squared off with Fallon in a lip sync contest and things got out of hand quickly.

It's pretty entertaining and has us thinking that maybe Fallon fans should start looking forward to other star appearances and not just 'Timberlake Tuesdays'!