There are some new sales going on via Steam where you can get at least 50% off on some games.
Hearts of Iron III and Europa Universalis III Complete are both on sale for 50%, as is the LucasArts Adventure Pack, which includes Indiana Jones and the Fate of Atlantis, Indiana Jones and the Last Crusade, Loom and The Dig.
Majesty 2 is now available for 75% off and the DLC Majesty 2: Kingmaker is also available.