Warner Bros Studio Tour, Los Angeles
If you go to Hollywood you have to do the Studio Tours. Warner Bros is one of the better ones as the tour takes you through the working studios. There is even a chance you may see a celeb as you are riding through.
The only down side is that your camera is locked away for most of the tour to respect the people working there.
They stop so you can have a look inside some of the studios and you are almost guarenteed to see something you recognise from TV, whether it be houses from Friends or the External set for the West Wing.
This tour lasts about 2 hours or so. At first you are driven, by golfcart, around these massive studio's...by a guide, who shows you varios sets that have used in horrors, westerns...all sorts!
I'm not a huge fan of films/dvds as a media...so have no idea what films these sets were used for...