I just finished my "World's Finest" mod. It features a 4 mission campaign with Superman and Batman.
The story is inspired by the EZScript story I made for Benton's EZScript promo (http://bentongrey.wordpress.com/2010/01/17/ezscript-script-o)
When I was growing up here in Brazil one of my favorite comic books was a black & white monthly called "Invictus", featuring the stories from the World's Finest Heroes. It was a great pleasure to be able to write about them.
Once again thanks to Prev and the FRP guys for hosting the mod, you're great guys!