MacGameStore has some deals up at their site.
Star Wars Epic Bundle $9.95 – includes below:
Star Wars: Knights of the Old Republic (Steam)
Star Wars: Jedi Knight Jedi Academy (Steam)
Star Wars: Jedi Knight II Jedi Outcase (Steam)
Star Wars: The Force Unleashed (Steam)
Obviously this is going to only be a good deal if you didn’t pick up the Star Wars Humble Bundle.
[Update: Use the coupon code starwars for an extra 25% off.]
Tropico 5 $13.59 (Steam)
Tropico 5 DLC 25-50% off. (Steam)
Total War: ROME II – Emperor Edition $24.95 (Steam)
Dead Effect $2.39 (Steam)