Note that Bad Grandpa isn't included on this list because it deviates substantially from the formula of the first three films and is simply a "Jackass Presents" movie rather than a Jackass movie in its own right. 2002's Jackass: The Movie was a feature-length expansion of the show's simple-yet-satisfying formula, upping the budget and delivering a number of outrageously memorable skits, such as Bam Margera's tireless efforts to get his mother April to say the F-word. 2006's Jackass: Number Two somehow plumbed even grosser depths, convincing Dave England to eat horse dung for $200, and Chris Pontius one-ups him by drinking a load of horse semen. Getting through the latter scene without gagging is a challenge indeed. Then came 2010's Jackass 3D, which took the next logical step in employing the use of high-frame rate, 3D cameras to capture the stomach-churning mayhem in super-slow motion and an additional dimension. It then all culminates in the glorious sight of Steve-O sitting in a port-a-potty as it's hurled into the air and he's covered in excrement. A fourth Jackass movie is reportedly in the works and set to be filmed in Australia. Perhaps Smell-o-Vision is the true way forward now?