I did it a few years ago.. Its hokey, but if you let yourself get into it, then you will have fun..
(its just like the review above, but no pre-show stuff.. just get on the bus and go)
They take you around town in a little bus and the guide tells you Vegas ghost stories.
We stopped at the Flamingo to look for Bugsy (sadly, he wasnt there that night) and at a (haunted) park to use the "spirit wands" that connect you w/ the dead.. (again, no ghosts joined us)..
We had a coupon, so that made it worth it, but you have to go into the tour knowing its gonna be cheesy, or else you will hate it..
marko..