The Incredibles - Mr. Incredible (Bob Parr) exercises in a railroad yard to get back in shape.
The Man Who Shot Liberty Valence - Opens with a train
Cowboy - Scenes in a cattle yard and livestock train
Terror Train - 'nuff said.
The Day The Earth Stood Still - New Haven engineer looking at a pantograph when Klatuu (or Gort) cuts all the power in the world.
Human Desires - Murder drama taking place around the "Central National" railroad. Lot's of stock footage of various railroads and close ups of repainted Rock Island FA.
North by Northwest - New York Central footage
Silver Streak (1934) - Terrible railroading, swell melodrama
Silver Streak (1976) - Murder and intrigue on AmRoad
The Long Summer of George Adams - Railroad worker faces life's challenges. Shot on the Texas State Railroad
Disaster on the Coastliner - 'nuff said
Superman (1978) - Young Clark Kent races a train and Supes prevents the derailment of an Amtrak train
Casey Jones - Syndicated 50's TV series
Ticket to Tomahawk - How to get a train from point A to point B when the tracks aren't ready yet. RGS #20 and very good prop replica stars.
The National Dream - Canadian series about building the Canadian Pacific Railway.
Union Pacific - C.B. DeMill epic about building the transcontinental railroad
The Adventures of Brisco County Jr. - Premier episode has prison train hold-up and involves alien artifact found during railroad construction
Dark of the Sun - Mercenaries use a train in the Congo to recover uncut diamonds
Supertrain - Mercifully short 1979 NBC TV series
Time Express - CBS's answer to Supertrain. Vincent Price takes passengers back in time to relive part a of their life.
Galaxy Express 999 - Japanese anime with spaceships built like trains
There's more, but that's all I can think of right now...
Rusty