United 93 Movie vs. TV Production

Rating: Null/10 (19 May 2006)

I saw a movie entitled "United 93 (2006)" on the Arts and Entertainment TV Channel about a week before the "United 93" movie was released in theaters.
Can anyone tell me the differences between the two? Cast? Writers? Directors? Story? I'm curious because the one I saw fit the accounts I've heard and read of the theater release so closely. I thought the TV production was all-around outstanding. It was straightforward and informative and, even though I felt the terror and grief as I watched, I never felt that my emotions had been gratuitously manipulated.
The events surrounding 9/11 are an important and tragic part of our history that I want to understand as well as I can. I would like to see the theater release, too, if the differences between the two productions are substantial.
Thanks for any information you can offer.
Donovan