This is kind of off the lunatic fringe, but I started a project to build up a super hero RPG based on the core WHFRP3 mechanics. I've got a working draft put together as a base, and will be extending it with combat resolution and so forth.
The main task ahead is adding the Stunts (equivalent to Actions) for all the typical superheroic power types, bad guys, sample characters and so forth which will be a damage over time kind of deal. I'm focusing on the Stunts first and have about 30 or so obvious ones written out on paper to type up, and I'll wing it from there.
www.killershrike.info/HammerDice_Supers_Draft_v1.ashx
It's an alpha version and unplaytested, but let me know what you think...