I thought this was a new thread, and was about to say 'Kingdom Hearts'

.
Morrowind: I saw that it was an RPG that you could customise your character, then, yeah. I bought it September 2002, and I'm still playing it and finding new things. Have finally filled up the entire map, too. Took bloody ages.
Shenmue II. It was second hand for $20, with a bonus DVD. It was surprisingly good.
Yes, TheRaisin.
Morrowind is teh single best RPG evar11! Buy it now, its frickin' crack, as Searex has previously stated. Buy it, buy it!
(Its slow paced at the start, but persist, my dear friends...)