Starring Tim Schafer as what can only be described as a game designer version of Dr Steve Brules. The Humble Double Fine Bundle itself is actually a pretty solid collection of games, combining the classic Psychonauts with some of the studio's more recent work like Stacking and Costume Quest. You like video games, right? Why not check it out.
The full list of games available is Psychonauts, Stacking, Costume Quest and Brutal Legend. Remember that Humble Bundle's work by letting you pay what you want, but you unlock Brutal Legend by paying more than the average punter pays -- a figure that is currently sitting at around the $8 mark. Someone has already paid over $2000 for it. Whoa...
You can also use the Humble Double Fine Bundle to pre-order the Kickstarter funded Double Fine Adventure now known as Broken Age. You have to pay at least $35 for that privilege.
Have at it!