I had one of these when they first came out. I found it recently hidden in some corner of my old room when I visited my parents' house. It had a horrible case of battery crust on it, so I had to toss it.
So onto e-bay we go to pick up a new one! Hooray for e-bay. This sucker is awesome. I love the sounds it makes. Just like the tricorders on Star Trek: The Next Generation. Whee!