Scotty
I always been curious about Scotty the locomotive operating terrorist. When the train hits the tanker train at the end of the film in a quick shot you can see a big happy grin on his face.
Was Scotty a lonely heart broken terrorist who agreed to take a suicide job or did Dane and Penn pay him a 6 month vacation to Mexico to do hookers and blow and catch multiple std's before taking the job?
I think his background story is one of the greatest mysteries in the history of films.