This is one of my favorite bad movies. Troma mixes Surfer Gangs, Neo-Nazis, a post-apocalyptic California and Leroy's mama all into one giant mess of a movie.
http://www.youtube.com/watch?v=Q8LV1S2q2GA
The whole movie is on youtube as well.
http://www.youtube.com/watch?v=Ql2creZA_SE