I don't think we've seen specific evidence that any particular person on that plane was a hero. I suppose it was a group effort (if it happened the way we have been told it happened) and the specific role of anyone in particular will never be known by us.
The article uses all the cell phone convesations from the families there were a core group of 3-4 who rushed the cock pit after Sandy Bradshaw the flight attendant boiled water to throw at the Terrorists.
You can hear the Lords Prayer being said on the cell phone before Jeremy Glick (NCAA Judo Champion) Mark Bingham (NCAA Rugby Champion) and two football players (Tom Burnett and Todd Beamer)-they had picked the most physically able people to overwhelm the cockpit and it worked.