Team Fortress 2 trading cards: Collect them all where all = 2

Valve created, but never released, a set of trading cards for TF2. Now you can download them in full hi-res and make your own double-sided cards to trade with one or more of your friends, although the trading permutations are severely limited with only two items in the set. Why not make up your own cards? Or drop in some J.R. Grossouts?

via Kotaku