football is just not a sport that translates well to the "all-star" format.
nobody plays hard
nobody hits (unless it's sean taylor http://www.youtube.com/watch?v=jPiZjUf9TcQ
and even the "big plays" are yawn worthy.
at least in the nba all-star games the dunks and alley-oops get's some oos and ahhs. sometimes they even get serious in the 4th quarter as well.