Pretty awesome glitch, which doesn't work on the 3DS one. Still, you go straight from the Gohma arena to the collapsing version of Ganon's Castle, which is one hell of a skip.
Apparently there's also an Ocarina of Time 3D one which lets you skip the final boss and go straight to the credits, but I can't find a video of it.
Haha, why is THAT always the thing people say they never knew about? So simple...
Anyways, the only glitching I ever did was escaping the forest via Deku Nut and getting to the Spirit Temple immediately. I never knew about this one! Kinda cute watching little Link stand up for Zelda against Ganon with a stick (that and the Master Sword appearing temporarily in the place of the Kokiri one).