My parents met in the Army during medical training. They married after knowing each other for only a couple weeks because they both knew all of the lyrics to this really goofy, obscure song. Same odd-ball sense of humor and love of word play and science fiction. It was destiny, I suppose. They're massive dorks.
My paternal grandparents were set up on a blind date. My maternal grandparents met in a restaurant. Both grandfathers were military men (uniforms = hot stuff) and my grandmothers were both stunners. Pretty classic, really, for the time.