The Tonight Show With Conan O'Brien -- FIRST GUESTS

Conan O’Brien chases down a taxi down on Park Ave. in Midtown Manattan while filming a skit for tomorrow’s NBC Upfronts on Monday afternoon (May 18)

It was just revealed that Will Ferrell will be the very first guest on The Tonight Show With Conan O’Brien, premiering on Monday, June 1 @ 11:30PM ET/PT on NBC.

Pearl Jam will be the first musical guest.

Current Tonight Show host Jay Leno will have Conan on as a guest for his last night as host on May 29.