Steam Summer Sale

Hey guys, what would be some recommended games to buy during this steam summer sale at the moment?

I already have Garrys Mod, Counter-Strike, CS:S, CS:CZ


(User was banned for this post ("This has nothing to do with rust" - postal))

http://forum.facepunch.com/showthread.php?t=1283939 I suggest this.

Edit:

Also wrong place to be asking stuff like that.

Wrong forum