I started to learn to play the piano too, but I never really kept at it although from what everyone tells me I should have because I have a really good ear for it, and my big hands would be a plus there as well.
I have a friend that can pretty much learn any instrument he wants in a week or two, he's just that good. Right now he can play the Bass, Drums, Piano, lead and rhythm guitar, the trumpet, and last I knew he was going to try to learn the flute but if it took him more that a week or two he wasn't going to mess with it. That's the guy should should really see play Guitar Hero he tears it up on expert, although somtimes he'll complain that the song is harder to play on Guitar Hero than it is on a real guitar.
For instance he's so musically talented that he listened to a song in a movie and then went over and sat down at the piano, which he rarely plays and played the song on his first try and only missed one note, and then of course he was annoyed at himself for missing the one note.