Check out Humble WB Bundle for getting 6 AAA games on Steam.
Pay $1 for getting these games:
- Batman: Arkham Asylum GOTY
- F.E.A.R. 2: Project Origin
- F.E.A.R. 3
- Lord of the Rings: War in the North
Pay more than the average ($4.50 currently) and you'll also get:
- Batman: Arkham City GOTY
- Scribblenauts Unlimited
Please keep in mind that there is charity included so pay more.