I'll have to think about this a bit...but the conversations got me to thinking about great movie scenes on trains. "Strangers on a Train" by Hitchcock. "North by Northwest", by...hmm... Hitchcock. Sherlock Holmes (played by Basil Rathbone) had some exciting scenes on a train once or twice too.
What else...

"Once in awhile we get shown the light, in the strangest of places, if we look at it right" - Hunter/Garcia