When I get going, I can type well over a hundred words per minute with few errors - and even fewer errors when I'm typing from a script than when I'm typing from my head. Sometime in September of each school year, I take my kids into the computer lab and arrange to "help" them type stories into the computer. I can do in two minutes what takes them a laborious half hour to accomplish, and I correct their grammar and spelling and teach them about the corrections as I go. It's worth it for the awe factor.

And you're right - I've never met a pianist who wasn't also a good typist, though I know quite a few good typists who can't find middle C.