Bruce Willis has been rocking his Red 2 promo tour, and on his Late Night appearance last night, he did a Frankie Valli and the Four Seasons cover  while wearing a ridiculous wig. Also, when asked by Jimmy Fallon if he preferred his one-liner from Pulp Fiction (“Zed’s dead, baby. Zed’s dead”) or Die Hard (“Yippee-kiy-yay, motherfucker”), he naturally went with the more profane one.