I actually play EQ, SWG (on a furlough till they fix a few things) and recent release CoH. Now that is a fun, fast paced game! If it wasn't for my smithing addiction, I would have quit EQ a year or more ago.
I've played em all save for Horiszons and COH.
AO is still my favorite and this September we get the Aliens invading! That is gonna be some fun. You get player made cities that get attacked by the aliens then if you beat back their attack you get to try boarding their ships and taking them on!
Have y'all seen the new Half-Life 2 demo? It will blow you away.