I'd say about 17 - 18 hours on Final Fantasy VII from morning to night, and then the second most would probably be Final Fantasy XII or Elder Scroll Oblivion, I think I had about 6 - 7 hours into Oblivion
You can't help but root for the underdog, GO PS3!
End of 08' Sales
Wii: 39.56
Xbox 360: 24.75
Playstation 3: 20.58