Well, these are the ones currently installed on my laptop, which is all I play...

Hitman: Blood Money: Great episode in the Hitman series, recommend it to all of you. Best graphics and physics so far too...

Medieval II: Total war: What can I say you already don't know yourselves? Keeping this mostly for PBMs and an occasional attempt at Otumba

Victoria: An Empire under the Sun: The strategy game to rule them all, IMO, playing this less and less as deadlines come closer and free time gets sparser.

Hearts of Iron 2: Doomsday: Great fun. Faster and intenser than Victoria. Also gets boring quicker, once you have established yourself firmly...

Europa Universalis III (demo): Well, there is a whole thread for this one, but it looks promising, and I enjoy toying with the text files to produce funny combinations. The Papal states getting the Calvinist reform is my favourite so far. Looking forward to the full game.

Max Payne 2: The Fall of Max Payne: Can't beat it for atmosphere and film noir dialogue. After beating this 6 times on different machines, need to beat it again to see the good ending... Also recommend trying out the Cinema 2.0 mod. It adds some funkier visuals, although the film noire gets intermixed with Miami Vice somewhat...