It's Monday, so that means more Online Deals! Not many at the moment, but I'll update it as and when they change.
 
Steam 
Midweek Madness - Half Life 2: Episode 2 - 75% off - now $1.99/£1.49
 
Weekend Deal - 75% off Command and Conquer games, including Tiberium Wars, Kane's Wrath, Red Alert 3, Uprising, and the poorly received Tiberian Twilight
  
Agricultural Simulator 2011: Extended Edition (a.k.a. Farming Simulator 2011: Game of the Year Edition [ho ho ho]) - 10% off - now $17.99/£13.49
Portal 2 Preorder - 10% off - Now £26.99/$44.99
The Witcher 2: Assassins of Kings Preorder - Now £29.99/$44.99
AI War: Fleet Command - Now £5.99/$9.99
CrimeCraft: Bleedout - Now £5.59/$6.99
Commander: Conquest of the Americas - 70% off - Now £6.30/$9.00 
ProtoGalaxy - 50% off - now $4.99/£3.49
Cricket Revolution - 80% off - now 99c/99p

Games for Windows Live
Deal of the Week - 4 Elements - 50% off - Now £2.49/$4.99 - Until Thursday 24th
Deal of the Week - Tropico 3 Gold Edition  40% off - Now $14.99/£11.99 Until Thursday 3rd

Direct2Drive
Presidents Day sale - 20% off EVERYTHING until Tuesday - Use promotional code "hailtothechief" for the US or "vatfree" in the UK/EU.