I have no clue who made these two hacks included in this .zip folder but I got:
Afro Mario Bros. (Mario Bros. hack (NES))
Super Butt Bros. 3 (Super Mario Bros 3 hack (NES))

Afro Mario Bros. is a graphics hack where the character's heads have afros on them.
Super Butt Bros. 3 is a more "mature" version of Super Mario Bros. 3.

Here is a link to the .zip file:
http://www.usaupload.net/d/eo75fjls2sc