Been a while since I've actually played anything, but the instruments I've played at varying points go as follows...
Flute, Trumpet, Cello, Viola, Violin, Bass, Guitar, Bass Guitar (just a damn bass you hold like a guitar I suppose is the description), piano (very iffy at this one), random percussion instruments, and that'd be it I think.
The only one I very seriously played was cello, and I was quite good at it. Shame the high school I went to didn't have an orchestra and I was too pressed to participate in an extra curricular orchestra (well, not so much pressed as I had some jobs and didn't feel like giving up ALL of my free time).
At the moment the only one I still play every now and then is a violin, since my brother owns one. Not the best, but I'm no slouch with the thing.