John Mashey was nice enough to show Inel and me around the Computer History Museum where John is a trustee and docent. Main highlight was one of two working Babbage engines in the world, and this one is only there on loan until the end of the year, so you might want to visit while it's there and they're giving demonstrations.
I also thought the Hollerith 1890 census tabulating machine was pretty amazing, which counted tabulation results by creating electrical connections through liquid mercury. And seeing John's work there was cool too.
Glad I finally got to go, and I'll have to come back and linger some time.