Movie website Dark Horizons has a tiny snippet of info regarding the Halo movie: Denzel Washington is rumored to be up for the role of Master Chief. The rumor is one sentence long, halfway down the page, and has no source listed:
"Latest rumours have Denzel Washington as the favourite for Master Chief."
If there was an article associated with this headline, it has since been removed.
My take: I don't know about Denzel being the Chief. Personally, I think that role should be filled by an unknown. However, I do think Denzel would make an excellent Sgt. A. J. Johnson.
[Via Xboxic, kudos to YLA G for the picture]