I have to admit it, I do enjoy the Final Fantasy series. With RPGs, its never the play or the graphics that count, its always the STORY. The plot lines never cease to amaze and entrap me! I have to agree, FF 10 was kinda weak in the plot line, but even that game was fairly good. They have it all; action romance, drama...anything you can ask for in a game plot line. The play system is usually smooth and I don't argue with how the battle systems work.
Some other favorites I have...
Zelda Series
Madden Football
Grand Theft Auto