Over the next seven days you'll be able to save on a wide array of Sega-published PC games in a Humble Weekly Sale. A nice mix of new and old titles, the deal is broken down into three tiers.
You can name your price for a bundle containing Alpha Protocol, Hell Yeah! Wrath of the Dead Rabbit, Company of Heroes, and Rome: Total War. The next step up, reachable by paying at least $6, adds The Typing of the Dead: Overkill, Renegade Ops, Medieval II: Total War, and 10 Sega Genesis titles, including Vectorman, Comix Zone, and Shinobi III.
Lastly, at $15, you'll receive everything above and Total War: Shogun 2. The games speak for themselves here, so I'll just say that I highly recommend going for at least the second tier.