Not satisfied with just watching the films of their favourite superheroes some fans set about making their own fan films and trailers for the films they’d like to see. Three good examples are:

TheForce.Net | World’s Finest – Superman/Batman team up.
TheForce.Net | Grayson – Robin seeks justice for the death of the Dark Knight.
Collora Studios: Batman – Dead End – the Dark Knight meets more than even he can handle?