Kind of digging that Jay-Z/Eminem mash-up in the DJ Hero video game commercial. Next question is is the game as fun as the mash-up is? A link to the commercial via the DJ Hero Web site is below.
By the way, as a guitar player, I don't play Guitar Hero. It is not the same thing as actually playing. The only praise I can give that game is there's a good varitety of songs in the games. The young whippersnappers end up getting into some old tunes that they otherwise wouldn't seek out.

http://djhero.com/media