Valve's back, following its hilarious Team Fortress 2 Valentines from last year,with four sets of gift cards featuring characters from TF2, Left 4 Dead, and L4D2 that are simply a holiday must.

They're slam-packed with in-game memes - Pyro's speechlessness, Demo-Man getting lit on egg nog, and Spy romancing Scout's mom under the mistletoe. Each set is $15.95 - a steep price to confuse your family, or a bargain to wow your friends, your choice.

2009 Holiday Card Collection [Steam via VG247]