Labrat is my favorite, mainly because when I got the jj2 demo for Mac (back then (1999) we were still stuck on a 486, and when we got a iMac from my homeschool, it became the most used computer in the house)!, I really loved the first level in the demo. I still like to listen to the music now and then.

(Interestingly enough, I figured out how to recreate the mac version of the song. It has a extra sample at the end that completes the song)