Our favorite viral video of the week is the one in which Jay Z politely answers the difficult question put to him by an old woman on the subway: "Who are you?" Surprisingly, he did not come back with, "I'm young Vito, voice of the young people, mouthpiece for hustlers." If you haven't seen the video already, you should.

Speaking of hip-hop heavyweights, this week, for some reason, saw the release of the details of the autopsy of Christopher Wallace (aka Notorious B.I.G. aka Biggie Smalls), who died 15 years ago. The cause of death was of course multiple gunshot wounds, but it turns out, according to the autopsy, only one of the four shots was fatal. TMZ (who else?) has the skinny.

Who's more popular than Justin Bieber? Nope, not Pitbull, and not Florence + the Machine either. It's Psy, of course, whose zany video for his K-Pop song "Gangnam Style" is currently the hottest video on YouTube, an honor that was recently held by The Biebs. Will Psy turn out to be a one-hit wonder? As they say in Korea, dong-yeon-ha-jyo!