This, looks interesting.
An unknown trailer with only this date, 1-18-08, has recently popped up on the web. Discussion on DOA has already hit the ground running and led to various speculation as to what film it exactly is. (see Gamet's post on page 2 for more proof.)
Whatever it is, it's already got audiences on the edge of their seats and diggin for info like moles, trying to figure the pre-release puzzle.