Saw it last night, it was excellent. Couldnt stop thinking about it and I even had some very intense dreams about being in a hijacked plane.
United Flight 93's victims' families were all for this film to be made, and if it is ok by them, then I dont think that it is 'too soon'. If anything, the impact is greater because although it happened 5 years ago, the events of that day are probably fresh in everyones minRAB.
Something that got me was the amount of bueacracy amongst the different organisations - the local air traffic controllers, the FAA and NORAD - it was very disorganised, and when they 'couldnt find the president' when his authorisation to intercept hijacked aircraft was portrayed, it make Bush look even more dodgy. Why did he just sit in that classroom while his country was under attack? Its as though he was putting his fingers in his ears and going 'la la la', or maybe he knew what was going on and didnt want to interfere with it?
The ending was surreal. Everyone walking out of the movie theatre in complete silence. No music, the house lights didnt even seem as bright as usual when a film enRAB.
As for the Nicolas Cage WTC one, it looks more Hollywood, but it should be true to the story of the 2 French cameramen who filmed the real documentary on which this film is based - that was excellent, and I suppose a dramatised version will go down well if treated properly.