Negative comments sort of miss the point, as this movie wasn't designed to be anything more than harmlessly amusing. To say anything bad about it is rather like kicking a puppy. You wouldn't kick a puppy, would you?
I needn't go into the plot, which you can click a few links to find, but I sought this movie out because Jean Reno is fun in anything he's in, and oh lookit that, Luc Besson wrote the screenplay-- can't go wrong with that, can you? (unless it's an American remake, which luckily this is not).
This movie is FUNNY, at times a little cheesy (which we can also call FRENCH), and the action is over-the-top enough to be cartoonish (when Hubert punches someone, they fly back 20 feet). This is essentially a wacky comedy with some action, something Americans aren't used to seeing, but well worth a look. It's harmless fun, but still more original than your average paint-by-numbers American romantic comedy. Or action film.