I wouldn't say this is the greatest Van Damme movie ever, However I did enjoy it. Now the weird thing is no matter how many times I see this, the day after I want to see it again, now this usually never happens with me. Its also the same with "Double Impact" and "Wake Of Death"
I really enjoied this one, I'm really petriefied to see such low ratings, this movie never took itself too seriously and that's why it actually works! It's a brilliant mixture of action and fun, it was made for entertainment and that's how it should be treated: as a one of a kind action comedy. The fact that so many people fail to perceive it correctly is really sad. There are so many really bad, bad-taste flicks that actually got higher ratings, that's the scariest thing these days.
I'll admit that Knock Off is one seriously underatted movie. I definitely enjoyed this film when it first came out years ago. Action packed and with an unusual HK visual flair, Knock Off deserves its place as a Cult Classic.
The Quest is another great Van Damme film, by the way. You should check it out.