I played French Horn for 8 years and got pretty good at it.
I've played the piano for the last 18 years and I'm still pretty good at it. I think I can sight-read quite well. Getting the discipline to practice, however, is another story.
I started playing the organ for church about three years ago. It's just like the piano, except the pedal likes to move around a lot. 🙂
And although not a legitimate instrument, my singing voice gets a lot of time out of me due to my involvement with the Houston Symphony Chorus.