This is pretty cool.

Update: Because I don’t want any more email like this:

Er, you *do* realize that the Museum of Lost Interactions is a hoax,
don’t you? It was a project of the University of Dundee design
school. A very cool project (I love the acoustograph, as the world’s
first file-sharing mechanism), but still.
Oh, well, you were probably just trolling for people like me. How
many have you caught so far?