I can sit down at a piano and make something up on the spot, and have people say "That's really good, what song is it?".
Unfortunately I've no idea if that makes me good or not as the only other piano player I know is the wife, and while she can play sheet music as well as anybody I've ever heard, she can't improvise. So let's assume I'm awesome.
Also, I'm very good at identifying different sorts of colas just from the smell.