Top 25 of the Decade (2001-2010)
These games represent the best of the last decade. Others are bound to disagree, but I think that by looking at these games you get a pretty good feel of the evolution of gaming over those 10 years.
They are ordered based on year of release, then alphabetically. I avoided putting more than one game from a series on the list, and opted to put the one that was most influential to me.
Update: List has been tweaked to better represent the decade as distance has given more clarity to how it should look.