Steam are running their usual yearly sales - with some huge savings again this year. As a bonus, every day 30 people are selected to receive their top 5 games in their wishlist - so if you don't have your wishlist filled, I'd suggested you do this now!
As for the deals, there's things available at up to 90% off. Games from Deus Ex collection, Prototype, RUSE, Borderlands and Counterstrike Source, CSS being available for $5 !!
To hit up the sales, clicky right here.