Trivia: This is the second time that actor Danny Trejo has played a character named Isador "Machete" Cortez, the first time being in "Spy Kids." It's debatable whether or not they are the same character.
Continuity mistake: When Machete mounts the minigun to the motorcycle in the big fight scene at the end of the movie, it's just the gun barrels and breech on a plate between the handlebars, with no ammo feed. When he's in midair and firing, there is a very visible ammo feed chute going into the side of the gun (as there should be). In the next frame, he lands and gets off the bike, and again it's only the gun/breech assembly, no ammo feed.