Jay Leno’s first week back proved successful, as the once-again host of The Tonight Show brought the program back to the No. 1 spot among adults 18-49 and in total viewership, according to NBC. Since reclaiming the show from Conan O’Brien, Leno outranked competitors Late Show with David Letterman and Jimmy Kimmel Live, averaging nearly 2 million adults in the coveted age bracket and about 5.5 million total viewers. During O’Brien’s stint, Letterman consistently dominated The Tonight Show. Leno’s return to the 11:30 p.m. timeslot also boosted ratings for the followup program, Late Night with Jimmy Fallon.