Last night on Late Night With Jimmy Fallon, the Lorax, in the form of Danny DeVito, took the stage and did the happiest dance to the Roots. Plus: Elizabeth Olsen spent her 23rd birthday shopping for pots and pans and cooking herself a birthday cake; Ed Helms realized the overlap between The Hangover fans and Bourbon Street revelers is frighteningly large; and Neil Patrick Harris can now sext James Earl Jones. Watch our compilation to see what you missed.
