'Nobody ever loved me that much.' -- 'Rick', Casablanca
What makes that a great line is that it conveys so much in the context of the scene. (And that I can relate to it has nothing to do with it!)
'Well, sometimes the magic works. Sometimes, it doesn't.' -- 'Old Lodge Skins', Little Big Man
I use that one a lot.
'I've got your Pearl Jam!' -- Transvestite Mardi Gras-goer, Zombie! Vs. Mardi Gras
That one always makes me crack up.