A scene from Back to the Future was shot at my local mall. I don't remember if I actually noticed it myself, or if someone told me that was the case. The warehouse shootout scene in Mr. & Mrs. Smith took place at what used to be the local Costco. But that one, everyone and their moms knew Brad Pitt was in town and people were driving over to watch them film so I was actively looking out for it when I watched the movie. I wouldn't have noticed it otherwise.

Aside from that, I lived in Los Angeles and now I live near San Francisco, so I recognize stuff all the time. A lot of the time when you see University settings on TV shows, it's either going to be UCLA or USC. Tons of high school stuff is shot at Torrence High School.

I've visited a lot of the areas in Hawaii where they shot Lost. And I just got back from visiting tons of filming locations in New Zealand for Lord of the Rings.