I also haven't watched it in years, but it definitely qualifies for cult status. Norris vs. a homicidal maniac whose being experimented on by a mad scientist who makes him unkillable. Gotta love that plot idea.
Even at the time it came out, you could tell the movie was made for like $5, I'm sure it doesn't hold up too well. But if I'm high enough, I'd probably still enjoy it.