Whoa. Valve just released exclusive Sam & Max goodies for Team Fortress 2!
If you bought Sam & Max: The Devil's Playhouse on Steam during the first week after launch, these items will unlock in your copy of TF2. You should probably go check that out immediately.
What's that? You bought it from us instead?! You can get the items, too. If you ordered the game from our store prior to noon (Pacific Time) on April 26, 2010, you're good to go! This page will figure out if you qualify, and give you a key to plug into your Steam client.
PS: Find out about Telltale's Team Fortress 2 Studio Rumble exploits.