Wife: Shadowrun because it's a post-apocalyptic world where I have the chance to be part of PFM. It's gritty, it's techno & magic. So it's got a majority of the modern conveniences while still having PFM.
World of Warcraft because it amuses me to play a fucking Cow (Tauren), a fucking Cow riding a BATTLE CHICKEN!!!!!
Me: Rifts RPG because it too has both Tech, PFM, and Psionics. It's all that parallel world spanning, galaxy traveling, post-apocalyptic, anime, western, shining knights awesomeness rolled into one. Plus you get to kill Nazi's. The system may not be the best but the world itself is endless in possibility's. Add in mage's, glitterboy's, cyber-knights, wolfen, etc and you have one of my favorite, but underplayed, worlds.
Star Wars: The Old Republic because I want to be a Jedi baby. Use the Force, fly a spaceship, wield a lightsaber, kill the bad guys, and because Star Wars.
Fable because I just would sit for hours & play. it was Fable or Mass Effect but Fable won because I really really liked being able to do magic, fight, save the day (or not) but no matter what you had a world where good & evil were not so grey.