I don't really care for the free food, the toys, the microkitchens, or the ridculously-massively-distributed infrastructure. It's not the pay, the on-site massages, the flexible work hours, or the free books. Guido van Rossum, Vint Cerf and Rob Pike are great, but they're no Angelina Jolie.
It's the business cards... they really are quite cool.