If I could figure out how to port Aces High onto linux i'd ditch windows 7 in a heart beat, I heard recently Steam made a linux port - which is a nice boost to gamers...
There are some classic games out there ported to Linux, Doom and Quake 2 for example. One of the draw backs to Linux is it couldn't run window games - I think with the boost in speed computers have now a days, there are ways to port window games - meaning you can play them on linux.
I haven't used Linux in some time, my netbook still has it installed as my laptop (once I got this desktop) I wiped clean Vista from my laptop and put Ubuntu - works great in the office for everything I need it to do.