Does anyone know any good RPGs for PS2 that take longer than 6 hours to beat? Everything I play I beat super quick and its no fun for me. Any sugestions?

Any of the Final Fantasy games should take you a minimum of 20 hours. Magna Carta will keep you busy for a while. Rouge Galaxy is beautiful, and has a very long and well written story line. I enjoy the Disgaea games, but those will eat your soul... Dragon Quest VII is really good, especially if you are familiar with the other games in the series.

I'll think of more, I'm sure :D

Breath of Fire: Dragon Quarter will definitely keep you busy for a while, though it is somewhat hard to find.