It will be on 5th of December. And I want to give something you want, so I'll pick few most wanted games, just post game you want. Rules:

• price of game must be lower than $30
• one person - one post with one game
  I know there is steamgifts wishlist, but it will be forum only giveaway and as you know only small amount of people know about it's existence :)
  If this thing fails, I'll pick some more or less random games :P

EDIT:
I read all comments. Amazon bundle is not possible for me to get, because I don't own credit card with USD and I can't pay with my own currency. If you posted something about that bundle you can reconsider your choice and edit your post.
If you posted more than 2 games I'll pick first one mentioned in it.
Also so far it's going well, and we have 3 leaders: CS:GO, Mark of the ninja and Torchlight 2 (maybe not exactly in this order). Some games are slightly behind, but for now you can expect 4-5 games from me :)

EDIT 2:

I can't get Skyrim from Steam store, Amazon or Gamestop, it's region blocked in Poland.

Confirmed to giveaway:

• Legend of Grimrock (got it almost free, I had coupon for it)
• 2x Dota 2 for those that don't have it yet

EDIT 3:
Another confirmed giveaway: Fable - The lost chapters. For me it's best game ever and I just want someone to experience it's wonderful world.
Details to every giveaway I'll create:

• start 5th of December 12.05 a.m. CET (thats 11.05 p.m. GMT), end exactly one week later (12.12 at 12.05 CET)
• minimum contribution is $5.12 in order to prevent total leeches to enter giveaways