Cho'Gall

There is no server in all of WarCraft quite like Cho'Gall.

Each server has its own personality, of course. Moon Guard is the massively RP (and notriously ERP) server, Illidan is the economic heaven that crashes periodically, Proudmoore has a large amount of diverse lifestyles. Cho'Gall is famous for being host to the greatest faction imbalance in all of WoW.

Last I checked, there were 20 Horde for every 1 Alliance player. It's a truly amazing place to play, on the Alliance side especially. When you do Wintergrasp you never have fewer than 8 stacks of tenacity (and more often, 16-20). People are so few and far between that everyone pretty much knows everyone else, and you can't escape your own reputation so there's an inclination to be forgiving.

And when it comes right down to it, everyone needs each other because the auction house is a disaster. If you can't do it yourself, you need to use trade chat to find someone with the skill to do it for you. It's the cooperation out of necessity that has drawn me back to Cho'Gall after a hiatus. I'll probably go play my rogue or druid when cataclysm hits, but playing the paladin on Cho'Gall is great fun right now. It's like playing wow minus all the idiots.

And I've always said that the only thing wrong with WoW is the people who play it - Cho'Gall fixes that equation for you.