I've been there and seen both houses (sort of, see below). The one that was misidentified as Wayne Manor has been in a bunch of movies and one of the batman films. It was the home to Rocky Balboa in "Rocky 3". People frequently mistake it for the one from the series, which is down a block or so and not viewable from the street.
Other houses on this particular street include the "Father of the Bride" house (from the remake) and the Governor's Mansion on the 70's series "Benson". Around the corner is the original "Dennis the Menace" house. Lots of filming sites in this area.
As an aside, long before we had annual passes, I used to be very fond of finding filming locations. I suppose it comes from being a history buff. Coming from the east coast where history is everywhere to here left a little to be desired. There is, however, a wonderful film history in this area and it's pretty interesting. One weekend, we set out to find the steps that Laurel and Hardy moved the piano up in the classic film "The Piano". We found it hidden in a little community and it hasn't changed much. We also found the street with the staircase from "Invasion of the Body Snatchers" and that was nifty as well.
Anyway, it's just another one of those geeky things that I'm into.
