The 7th Columnist has video of 2 multiplayer maps for Halo 3 – Epitaph & Last Resort (aka Zanzibar Mark II). They look brilliant.
He also has a full video of the Gamekings interview with the Bungie guys.
I love the soundtrack, the way it slowly builds up from a haunting choral tone and then breaks into the Halo theme, I really need to get a 360!