Here is some of my work and some of my experiments:
Games, Tools, and Utilities:
XBM stuff - doesn't work in IE 6 in XP sp2 because they disabled XBM support.
Demos and Experiments:
[N3?,IE] Radio Question Validator [submitted Aug 29, 2001, listed Feb 20, 2002 (2002-20-02!)]. Original Sample One user already noted that there is one vulnerability in the script... if you name your radio buttons with numbers it won't work.