From MythicTyrant:

Welcome to the Tyrant's Halo 3 Legendary Walkthrough! Each week I'll be taking you on a detailed tour of Halo 3 on solo Legendary with in depth, narrated video guides brought to you in high definition. Each week a celebrity from the Halo community will be guest hosting with me in addition to giving away awesome avatar prizes at the end of each episode.

Be sure to follow me on Twitter for a chance to win free XBL avatar prizes each week! The day of release, I will be asking ONE question regarding the released episode. The first person to get it right will receive a 343 Industries t-shirt avatar code: one male & one female.

Tyrant's Halo 3 Legendary Walkthrough - Crow's Nest