The Gipper's runs
When they were showing the touchdown runs by the Gipper, I noticed the numbers on the jersey of the runner(s) was different every time. And sometimes the jerseys had no numbers. It was obvious that only the last run (with the freeeze frame) was actually Reagan. If ND had that many good runners, why was Gipp needed so badly ("If we only had a halfback...")
I'm an advocate of "It's only a movie...", but it would have been nice to see some actual footage of Gipp so we see how good he was.