IMO, overdone by a certain scene and played out. They make a great car look tacky by association.

Do something truly unique with your car. There's a member on some of the forums (I don't remember if he's on here) who has red LED's in his grills. It looks mean as hell. I'm not telling you to do that (because then it wouldn't be unique), just giving you an idea of what you can do if you get creative.