For a little experiment I'm going to start hacking the Spirit of the Century rules into something suitable for big screen, four color, super-heroic games. I'm looking probably hacking in the power skills from Legends of Angelerre along with some material from Icons and Eddy Webb's Marvelous Super-Heroes Fudge hack.
Watch this space for more.
Edit: I forgot to mention throwing Phil Reed's 4C rules into that blender too. :)
Edit 2: