I don't game either, but the current video cards aren't great. Especially the default. You can't even use those $20 adapters for video out. I still have a CRT to see what my output will look like on a normal screen, and would have to buy the overpriced and underpowered ATI upgrade aftermarket just to do that. The 7300 isn't supported. I usually just go through my iMac, which does have s-video/RCA out capability. My MBPs 8600 can do it too, as could my previous machine, a PM G5.Not me. I only do video not gaming.
Not to mention all of the stuff that's offloaded to the video card, especially in Leopard.