All I had to do was look at the few I've actually purchased, it ranges from the VERY dark comedy to silly.
Harold & Maude (my ex actually named a pair of cats after them in the 80's)
Blues Brothers
MIB - the original
Star ship Troopers
The Big Lebowski
Mulholland Drive (David Lynch's)
Pulp Fiction
Kill Bill (all three)
Fargo
Fido (hilarious Zombie movie)
Shawn of the Dead
Attack of the Killer Tomatoes
Beetle Juice
Eraser Head
Raising Arizona
Oh Brother where Art Thou
Snakes on a Plane
Night of the Living Dead
Child's Play (who doesn't love Chucky?)
The 1960 original version of "Little Shop of Horrors
Mars Attacks
The original, 1954 Godzilla Movie
Mothra (1961)
Gamera (1965)
Gorgo, a 1961 film so obscure that I doubt anyone has heard of it
Gorgo (film) - Wikipedia but I've watched it probably 15 times as a kid and at least once as a grown ass adult. In 1961 I made my Grandfather take me to that movie at least five times if not more, those were the days when we had drive in theaters.