Weezer's new song "C.E.O." It's structured as a musical redux of the 1994 smash "Undone (The Sweater Song)," the track that made Weezer famous in the first place. video also repeatedly calls back to the classic Spike Jonze-directed "Sweater Song" clip, but now with a lot more celebrity cameos. As the "Sweater Song" homage plays out, various other famous people also pop up, and I'd rather not spoil things by mentioning their names. Below, check out that clip and the dates for Weezer's arena tour.