Honestly I still wonder why people try to run games in Linux. If you're using it just because you don't want to use windows you're doing it wrong.
Only case scenario I can think of: I have a really crappy netbook. My Windows installation is already so slow that playing Minecraft is normally okay on it, but playing on my friend's server is unbearable. It's more bearable when I just start Minecraft straight from the .jar on my already speedy Linux installation. Don't ask me why, I'm fully aware of how ridiculous that is given that both cases are of the same game running in the same sort of Java virtual machine.
I'm going to out and out say I fail at being a geek becouse I have no idea exactly what Linux is, I know it's an operateing system for computers, and thats about it.
LINUX IS THE BEST MAAAAN hey want me to hook you up with what im smoking oh yeah now you're talking
Jokes about my counter culture city aside here it is:
1) You have a computer. Your computer has hardware.
2) Your computer does not actually do much of anything with this hardware without an "operating system".
3) Microsoft Windows and Apple Mac OS X are the most popular operating systems.
4) Linux is another operating system like Windows. It allows you to do the same kinds of things, but usually different specific things (for example, being built around the command line as opposed to Windows' GUI dependence)
5) The main thing that seperates it is that it is free and freely distributable and comes in different "distributions" like Ubuntu and Slackware unlike Windows where you just have "versions" like XP, Vista, 7.