Inspecteur La Bavure is the kind of movie you would show to kids so they'd learn something about French culture (Depardieu, Coluche, ...) but it's also a good and funny way to learn French ! Although I'm almost 21 and I still enjoy that kind of movies.
If you like De Funes, you'll surely like Coluche's movies.
It's the story about a cop who's really clumsy and gets himself into a lot of trouble. It's got that fabulous 'old' French humour in it. What I mean with 'old' is like de Funes or Pierre Richard. The new kind would be 'Mission Cleopatre'.
People has got to know who Coluche is. He's one of this people that made it by being themselves and who did a lot for the others (just take a look at Les Restos du Coeur - association which organizes once a year a big concert and a tour with a bunch of famous French actors and singers and with the money they collect they buy food for the poorer)
Anyway if you want to spend a nice evening without too much thinking I recommend it.