Well, before Windows 7 I always reinstalled Fahrenheit / Indigo Prophecy. Granted, the ending was naff, but I did like how different it was from other games. After that, it was then Sim City 4.

Now, Fahrenheit cannot run anymore (Grrr!!) and I've lost my disc for Sim City 4, so now I always reinstall The Sims 3 first, followed by Empire Earth II, if I can be bothered with it.