Other mistake: The movie starts in September 1961 and we are told that the talent show is in June. During the talent show there's a big banner saying 1961 when it should read 1962.
Other mistake: When McCroskey gets the information about Joe Seluchi, he's told that Seluchi purchased life insurance and was impotent. McCroskey informs Ted about Seluchi and the bomb he's carrying but nothing else. When Ted confronts Seluchi, he mentions both the insurance and the impotence.
Other mistake: Rattner and DiMone are game planning about Rattner's date with Stacy (Leigh). DiMone tells Rattner that all he needs to do to score with Stacy is play songs from side 1 of "Led Zeppelin IV" (Zoso). You then hear the song "Kashmere", which is on the album "Physical Graffiti".
Suggested correction: Damone (not DiMone), told Rat that when they were making out to put on side 1 of Led Zeppelin IV. The fact that Rat is playing Kashmir from Physical Graffiti is just to show that Rat was unclear about Damone's instructions.
Not sure if Rat is unclear about Damone's instructions... he said he had 4 steps to making sure that getting a date with Stacy and keeping her around, and if all else fails, to play side one of LZ-IV... seems that Rat would (should) have asked if he was unclear then at that point considering Rat had a crush on her throughout the movie. I think that it's more of a musical inside joke if anyone was/is familiar with the Zep catalog realizing two things - one, the first four steps of Damone's plan didn't work being that his character was pretty shady and fake (off camera...because you don't see Rat implementing any of them) and two, that "he can't even get the music correct" due to his nervousness.
Other mistake: When the Aggies are in the locker room after the football game, they are all getting undressed and showering. This is happening right after the game yet none of them have a spot of dirt on their nice white uniform pants. (00:59:50)
Other mistake: In the scene where Charlotte is in the bathroom and Chuck is trying to get her to come to bed, there is a shot of an alarm clock on a shelf above the bed. The time at the beginning of the scene is 1:03. The time never changes throughout the scene, even after Chuck goes to close the drapes and check the apartment. The clock is obviously a prop and is not plugged in.
Other mistake: The creep tells us that this is the first issue, but mere seconds after the famous ending of Father's Day we see fan mail on the second page, impossible for the first issue. (00:21:05)
Other mistake: While Coach is with Miss Honeycutt (aka "Lassie") in the boy's locker room, her exaggerated "oohing" and moans permeate throughout the gym, but do not match their actual sex movements during the camera cuts and she still carries on even when the action is paused.
Other mistake: Rupert almost got to the end of the cue cards when he flips too quickly the one saying "Alive", partially hidden behind another he is holding in his hand, showing the one saying "again" too early. So Jerry asks him to go back. And he does, only to bring then from behind "again." There is a small bit when De Niro is off-camera, but for this sequence to go as shown, he would have slipped to the bottom/the back of the pile the "again" card that was already at the top and then put in its place one of the two he had already in hand, the correct one, "alive." The fact that "again", that was at the top of the pile, is pulled from the bottom instead, makes no sense. (01:08:50)