Here's Blizzard's Black Friday sale, which starts not on Black Friday, but RIGHT NOW.

StarCraft II for $20, Diablo III for $40. (With the amount of content in StarCraft II, by the way, that first one is pretty much a steal—I've probably sent several hundred hours playing SC2 online over the past two years.)

If you're curious to read more about either game, check out Kirk and I discussing the appeal (and/or lack of appeal) in both Diablo and StarCraft.