Golden Sun sees the player travel Weyard to stop the release of Alchemy before it destroys the world.
Not sure how applicable this is, but if you run and talk to the switch at a particular angle the game glitches out and Isaac runs up the wall and then comes back down. At the moment, no practical use for this glitch - however it suggests that we should look into the mechanics of this glitch and see if we can't replicate this behavior elsewhere. Full video: http://www.twitch.tv/tl_plexa/b/397075589