If this interests you, I've got to throw in a plug for the Museum of Communications in Seattle. They've got a bunch of old mechanical telephone switches running

If this interests you, I've got to throw in a plug for the Museum of Communications in Seattle. They've got a bunch of old mechanical telephone switches running. There's something truly awesome -- in the correct sense of the word -- to be standing inside a computer and hearing the signals passing around you. It is a unique experience that I strongly recommend.