Synchtube

No more watching Snooki Punches alone: Synch lets you view YouTube vids simultaneously with your buds by popping in the URL and creating a "room" (to which you can invite up to four pals). Once everyone's in the "leader" starts the vid, which plays in real time on each person's screen, and there's even an embedded chat window for the group to thoughtfully discuss things like "DAMN, that drunk Hoff can eat, boy!"