Jimmy Fallon premiered his late night talk show host on Monday, interviewing
Robert De Niro and
Justin Timberlake (he
impersonated John Mayer).
The Roots jammed all night as
Jimmy's house band and rocker
Van Morrison was the musical guest for the evening.
EW said, "[
Jimmy] did an ultra-ordinary monologue - one liners about
President Obama and the deficit that sounded like material
Jay Leno's writers