Post about the games that are the best of best! If you earn a Legendary medal in a game, post about that game here!
EDIT: 343 Doesn't have the medals ranked as Bungie did in on bungie.net. So I will post medals that I think qualify here. Some are automatic as they were called "Legendary Medals" by Bungie at that time.
Inconceivable (Highest Spree Medal?)
Killpocalypse (Highest Multikill Medal?)
Gravemind (Kill ALL humans as a Flood)
Flood Exterminator (Kill 10 Flood in a Row Without Dying)
If you'd like to suggest an addition to this list send me a PM.