I may disagree with many of Valve's choices regarding Team Fortress 2, but I can't fault their creativity or sense of humor when it comes to pretty much any situation.  While many companies would've hunted down whoever leaked the video and sent their rabid lawyers after them, Valve had the poise to admit they screwed up and even put a couple of jabs into the final video revision to boot.

Among other amusing panels including "defenestrated", "found dracula", "lost dracula" and numerous others.  The full resolution board is here.

On top of that, with the Day 5 release listing the new Spy achievement names Valve had some fun at their own expense:

So kudos to the guys at Valve for not being corporate bastards.  I still think that stun bat is retarded and the game sucks without friendly fire enabled, but as developers you guys are pretty awesome.