Post Summer Sale picks (Steam, GOG, etc)

OK, so both Steam and GOG are having summer sales, ending in a few days. What game do ya'll recommend? Post links to them so we can buybuybuy and go poorpoorpoor!
• Castle Crashers $3.74
A neat beat-em-up with RPG elements. I was a fan of Tom Fulp's work on Newgrounds.com looooong before he was a legit game designer. Even if you don't play the game, he's worth supporting.
• Ghostbusters: The Videogame $5
I wanted this game 15 years ago. I actually thought a new GB game would be so cool. And my wish came true!
• Legacy of Kain Collection $10
I have these for the PS2 and I love them. If you haven't played these games this is a great deal! But it's not all violence-- there's a great story and there are puzzles!
• Max Payne Complete $11
All 3 Max Payne games for $11! Again, I played 1 and 2 on the PS2 and loved them. If you like noir style, a decent story, and shooting things, give it a shot.
Here's a list of all Steam Sale games: http://steamdb.info/sales/
Figuring out which games are on sale isn't as easy on GOG.com, but maybe this does it: http://www.gog.com/games##price=promo
Last year I got most of the Ultima games on sale with GOG. Steam and GOG also appear to have some of the same games on sale.