Factual error: When Max received a letter, the address showed that he lived in Cincinnati. But at the end of the movie, Max winds up Freak's bird, and lets it fly over the river towards the Cincinnati skyline. This means he is on the other side of the river, in Newport Kentucky.
When Max and Freak go into the coffee shop, Max says hello to Mr. Hampton and puts three Baby Ruth chocolate bars down on the counter in closeup. Then it changes to a longer shot and Max puts the chocolate bars down again.