Is johnny Knoxville in jackass 3?
yes, but its not called jackass 3. its called jackass 2.5
He didn't start jackass, Bam Margera and his little posse started the original jackass which was "CKY", that eventually got onto DVD and someone published them and gave the group the name "Jackass". Johnny simply met with them i believe while they were touring or some sh it, and they wanted him in the group. The obvious reason at hand though, is because they knew they would make BANK.