Conan O’Brien returned victoriously to the airwaves last night, killing the late show competition with the debut of his new show on TBS. About 4.2 million viewers tuned in for the premiere of Conan compared to 3.5 million for Jay Leno and 3.4 million for David Letterman. Coco also succeeded in attracting 3.3 million adults 18-49, a coveted demo for advertisers and an amount far exceeding his rivals—the former Doritos guy only had 995,000 in that age range.