"Unlock [a] Starfox Ship in Zelda Game"
I love stuff like this, but you need a GameShark to get at it.
Think of it as Hot Coffee, but without all of the lawsuits and sex. Looks like some goofy Nintendo programmers slipped an Arwing fighter from Starfox into Ocarina of Time. A reader sent me this screen cap along with a link to the video. In it you can see Link spotting the spaceship.
The linked article also has a video.