I think I'd like to take the tour just to see stuff like that (as a Brooklyn native) and to put my local knowledge against that of the tour guide's.

Geoff, TIS and I took a similar kind of tour (hard to believe it was about 9 years ago) of the "Sopranos" shooting locations. As a way to entertain us on the tour the guide asked "Godfather" related questions for prizes (like a box of ziti and such). Geoff answered EVERY question correctly and TIS and I got a few prizes .... I don't think anyone else on the bus participated.

Like I said, a tour like this is worth it if taken with friends.