Last night’s one-two punch of Jay-Z and Eminem performing live for the launch of Activision’s DJ Hero game was definitely the kind of dog and pony show you dream about. Where else will you almost get elbowed by Rhianna wiling out to “H to the Izzo” while Leonardo looks out from the coveted balcony seats? Of course, at any other concert, the balcony is considered the cheap seats. But that balances out nicely if you’re the guy who casually walked up to the front of the stage and held out your hand for Jigga to slap. Try getting that close at a regular Jay-Z concert.

The line-up started with TRV$DJAM, but the night really began with the food spread throughout the lobby. I’m usually shy of chowing down at public buffets—but with …