The Legend of Zelda: Ocarina of Time -- other than the fact that it's a pretty port of the best game of all time -- this might just win you over. In a video interview with ConservativeNewMedia, a Nintendo of America representative demoing the title at GDC revealed that the cartridge will contain both the original game and the slightly-more-difficult Master Quest.
Check out the video below to see the interview in question, and to see Link just stand around in the Deku Tree for a couple minutes. What are you doing loitering inside of old, sentient trees, dude? You've got Spiritual Stones to collect.
[Thanks to everyone who sent this in!]