As you prepare to shop and give presents to your family and friends you may want to give those gifts a certain special something. Valve's online store has some newly available holiday greeting cards that should give your gift giving efforts some extra "oomph."

The three sets of cards cover Left 4 Dead, Team Fortress 2 and the new Left 4 Dead 2 (which you can see above). The cards have that weird humor theme that always seems to creep up in Valve projects (we especially like the Spitter card in the Left 4 Dead 2 set). Of course there's also lots of t-shirts and other items in the online store that would be perfect for any Valve fan for the holidays (we want the Midnight Riders tour shirt please).