I happen to think that the best title EVER for a movie is:
Children of a Lesser God
How cool is THAT?
Yeah, well Brainsmasher-A Love Story has got it beat all to hell! 
Bright Lights, Big Titties is a classic.
I prefer that subtle homage to Dickens: A Tale of Two Titties.
Once I learned that there was a rose called an American Beauty, I dug the perfect marriage (:)) of title and material.
Sir Rhosis
I’ve always had a perverse liking for: The Englishman who Went Up a Hill and Came Down a Mountain.
I have to admit, I don’t really understand the title Children of a Lesser God. (I didn’t see it either, would that have helped?)
My vote goes to Dr. Strangelove or: How I learned to Stop Worrying and Love the Bomb.
Children of a Lesser God is a cool movie, and has a very cool title.
Boondock Saints, The Blood of Heroes, and Six-String Samurai all have great titles, too.
Also, strangely enough, if I had a band I would name it after any one of those titles.
My vote to Rosenkrantz and Guildenstern are Dead.
Faster Pussycat! Kill, Kill!
Lots of great titles mentioned here. Some other faves:
The Double Life of Veronique
Heathers
Schindler’s List (with a cool poster to boot)
But if I had to pick only one, I’d go with Wings of Desire. Wim Wenders rocks!
Texas Chain-Saw Massacre is, of course, the greatest movie title ever.
Not much of a movie, but I always thought The Laughing Target was a hell of a title.
–sublight.
Hmmmm…How about
Interview with the Vampire and Apocalypse Now?
Bring Me the Head of Alfredo Garcia is pretty good. And most Ed Wood films have wonderful titles.
Evil Dead 2: Dead By Dawn. Best title ever.
It’s set in a school for the deaf and besides being a romance between a deaf woman and a hearing man, deals with the question of, are deaf people disabled in a hearing world, or do they possess an equal culture of their own. The title evokes this question beautifully, I think.
(It’s been quite some time since I’ve seen it; I hope I’m characterizing it correctly, Hec )
As a random hijack, my mother (deaf herself) directed an award-winning stage version of Children of a Lesser God.
For the OP…
Not Without My Daughter. It’s a made for TV movie. It’s so evocative, so incredibly cheesy, that I love it.
Nobody’s mentioned “Booty Call” yet? You guys disappoint me.
“Psycho Beach Party” is also good.
And then there’s The Incredibly Strange Creatures Who Stopped Living and Became Mixed-Up Zombies – arguably one of the worst movies ever – but the title’s kinda cool.
It should have been Evil Dead 2: Attack of the Bones.