Lots of fun to do, that's for sure. The shop I go has one, and they have put ALOT of work into it to get it to work properly, tons of troubleshooting and tweaking. I would suggest you really go over it thoroughly after the install to make sure it works right. Save you some headaches and your customers as well.

I know the shop I go to does a real good business with it, many many people come just for that, and also they have a Techno league.