I lived in Vancouver, BC, Canada - Hollywood North - where many a science fiction television series was shot. XFiles, Dark Angel, Viper, Stargate, Millennium, Smallville, Supernatural, and so on and so forth. It was fun spotting locations I recognized.
It also helped that one neighborhood I lived in was used - a lot - for a lot of movies & television series.
Of course, now I live where Indiana Jones was filmed. Not that I'd be able to recognize anything from that...