Alright first off over clocking can be used for alot more than gaming. I personnaly am going to over clock my own system once I'm finished optimizing everything. And Linux is a perfectly good gaming platform, in fact there are quite a few linux natives of popular games(UT 2003, UT, and so on). And for all those games that don't have linux natives, I just use wine(I've had a good deal of sucess with that and it's getting better).
And of course Calus you're 100% correct, but there is no such thing as perfect. No operating system, program or anything for that matter is perfect simply because human beings aren't perfect. But Linux is the better OS simply, because of the nature of the way it's made. It's source code has crossed the globe and be contributed to by thousands of programmers. Bugs get fixed very quickly and security is really tight. Microsoft has the nasty habit of releasing bug ridden programs, that can easily crash the entire computer simply, because the kernel is unable to manage the memory properly. I don't say things bad about windows because it's an easy target, but rather I say them because of my experience with it.
Windows would have been a good OS if it were totally rewritten, but simply the way it's set up is terrible. Windows contains alot of old code that is highly ineffcient and left over from the days of 3.1. Linus Torvalds makes sure that the Linux kernel contains no legacy code, even if it means Linus himself has to rewrite huge portions of the kernel code.
Basicly Linux won me over by simply being better. I used to be a windows user, but I got tired of reformats, crashes and viruses. Linux doesn't have viruses(well two that I know of but those were jokes and since only root user can append executables it can't infect anything unless you let it). Linux programs do crash, but that's a rare occurance even when you try to make them crash. And reformats aren't needed.
At anyrate I'm not a hippy or anything as the like. I'm just a person who got tired of unreliable systems.
Ohh and cheese!

Me: Alright I'll stand here...try to crush me with the...*the Warthog lands on top of me*
Matt: Done and done.
Me: Ahh! My Corpse is stuck in the tire!