If you're as excited as I am about the fourth season of Lost, starting on Jan 31, then you might find this Lost fan map very useful for refreshing your memory. It includes all the places mentioned on the show, such as where Sawyer grew up, the flight path of Oceanic 815, and the locations of the Hanso Foundation offices. It also has a ton of interesting trivia. For example, did you know that the characters were lying whenever they mentioned Canada? I never noticed that.

And here are some links to other TV show maps:

Amazing Race 12 - Great map of the current season
Sopranos - Locations that appear on the show
American Idol Geography - Hometowns of past winners
American Idol Season 7 Auditions - Locations of the auditions for the new season
The Faces of Grey's Anatomy - Hometowns of the cast
One Tree Hill Locations - Notable places in the Cape Fear region that have appeared on the show
Veronica Mars filming locations - Parts of Southern California where Veronica Mars was taped