I've been playing Loong for the past couple of days. Same kind of gameplay as Battle of the Immortals and similar games. The graphics are really nice.
I played BotI until about level 62 on a priest character. I stopped mostly because i didnt want to keep having to spam mana potions the entire time i was logged in

but its a pretty cool game.
A.V.A. is my favorite FPS at the moment.
Bloodline Champions I'm betting is gonna be the next real big e-sport. You definitely dont wanna pass it up if you love pvp in games. Its very fast paced, rpg gameplay elements with the fast action pace of an fps in my opinion.
Vindictus is very cool if you like hack and slash games.
I played World of Warcraft goin on six years now. Once i found out about free mmo's i havent stopped playing them, its been about three months now. I didnt used to "game hop" but now i am and enjoying the heck out of it.