Talking with my wife tonight and I said "Remember that show where someone went through time to set up James Dean's accident?". She doesn't remember it and I can't find it on simple Google or IMDB searches.
I cannot remember the overall plot. I remember an aerial scene of the car approaching an intersection and another car coming in and crashing into the first car. I have a vague feeling there may have been two time interventions, one to stop the crash and another to ensure it happened (but I am not sure).
I think it was most likely an episode in a series, but cannot promise it was not a movie. I watched it in the past 6 years (with my wife, though she does not remember it). No idea how old it was, but it was in colour, and I think not very old.