OK, you've gotten sensible dating advice from Robert. Now, a few words from Evil Eugene's Dating Service:
If you REALLY want to make an impression on your date...
1) After a few drinks and casually normal conversation in your apartment, tell him you want to show him something downstairs.
2) Begin turning off all the lights in your apt., as if you're not returning. Then pick up a flashlight and slowly lead your guy downstairs, using only the flashlight for illumination. Start to say vaguely unsettling things to him.
3) Enter the Washertorium, moving the flashlight around quickly from one machine to the next, mumbling cryptic things. Laugh or cry inappropriately.
4) Stop, take a slow, deep, noisy breath and begin to moan softly, rocking back and forth. Then position the flashlight under your chin (lighting from below always adds to that "psycho look"), look him straight in the eyes and say "All my friends wind up down here."
This advice won't necessarily lead to a 2nd date, but both of you will have a very interesting story to tell!