I sauntered across this little gem this weekend and was amazed. This guy made a totally sweet 3-D gameboard for Talisman! (You can watch it with the sound off, its just background Enya music).
You can tell its 2nd edition (the best one) and not 3rd edition (shortened, crappy one) because of the presence of all the center stuff: werewolf, pit fiends, the "dice with death." The 3rd edition one I have now just has you draw cards once you get into the plains of peril, which is totally lame. Fortunately my buddy SuperChad still has my old copy of 2nd edition Talisman. I'm going to get that back from him in a month or so and consider making my own unnecessarily huge gameboard for Talisman. How can I resist after watching that video?
I stopped painting minis and crafting terrain once I moved to Wisconsin, but that video made me desperately miss my pinning vice and foam cutter, even if I'm no longer marching Necrons across fields' of battle.
I keep thinking of other game boards one could build. Arkham Horror maybe, with little light-up 1920s street lights and such. Fireball Island is an obvious one, but that one would have to be functional for the little marbles to roll correctly. What are other games that would benefit from a huge, 3-D terrain board?