Shooting is a sport. Shooting is even an Olympic sport. It consists of aiming an instrument at a target, pulling a trigger, and testing your accuracy and reflexes.
Given that, I definately consider gaming a sport.
Notebook: Apple Macbook Pro 13" i7 2.7Ghz (3.4Ghz max) 8GB DDR3 1333Mhz (Mac OSX 10.6.7)
Desktop: ASUS Rampage Formula X48
Intel Core 2 Quad Q9450 (Yorkfield) @ 3.60Ghz (Folding SMP Linux)
Running Fedora 15 Linux (GNOME 3) Dual Dell 2407WFP Drivers, Games, Demos, Mods and Overclocking Tools At AOAFiles