My last apartment had two huge mirror closet doors that faced each other. It was cool because it created that trippy infinity affect. I convinced a girl I was dating to have sex in that hallway so we could watch ourselves go at it. She really dug it because she felt like a porn star. I have to admit, it was pretty friggin awesome. No video tape, just a living reflection. I may go for the video taping thing someday. It would definitely have to be gonzo style though.
(For those who might not know what "gonzo" style is, it is basically the style where the guy is holding the camera as opposed to a tripod or cameraman. What'd you think? The muppet? You perv...)