I used to play the Cello, but had to give that up when we moved here (about 12 or so years ago). I started playing the clarinet in the band in 8th grade, and in 9th grade was moved into the marching band. (this taking place about 8 years ago)
After graduating high school, I didn't pick up my clarinet all that much, and started playing the piano. I found that I could play most of the music I learned on my clarinet on the piano, so I started messing with the piano more, playing mostly by ear.
As it turns out, I taught myself how to play alot of classic video game themes on the piano (some I still can't figure out on the clarinet).