Best Buy is selling an assortment of $10 games starting today. Some highlights include Soulcalibur IV
for PS3, Infinite Undiscovery
for Xbox 360, Samba de Amigo
for Wii, and Ninja Gaiden
for DS. While the list of discounted games is quite expansive, be warned that your local Best Buy may not have the game in stock. Be prepared to wade through stacks of other budget games to (maybe) find what you want.
The full list is available at Cheap Ass Gamer