As of this writing: Enjoy a 75% off discount on "Company of Heroes" titles, and a sweet 85% of discount on the Dreamcast Collection.
GameStop PC Downloads:
Legend of Grimrock - $7.49 (50% off)
This deal is active until Monday, October 8, 2012 at 3:59 AM GMT.
Steam: THQ's entire catalog on Steam is on sale for 50% off until October 8, 2012 at 10am Pacific Time. They're also having a special deal of the day in which you'll find even bigger discounts. Their October 4 deal is a 75% off discount on "Company of Heroes" titles:
Company of Heroes Complete Pack - $12.48 (75% off)
Company of Heroes - $2.49 (75% off)
Company of Heroes: Opposing Fronts - $4.99 (75% off)
Company of Heroes: Tales of Valor - $4.99 (75% off)