Visible crew/equipment: In the sequence where the young are in the field to clear up the rules of "chicken game" (or something), you can see a part of a microphone above them.
Visible crew/equipment: When Morris turns to face the mirror to see what the suit that he is holding will look like pressed against him, as soon as he turns and faces the mirror, look at the right side of the mirror where the edge of the open door is, you can see a crew member with the white baseball cap ducking behind the door trying to stay out of the shot. (00:02:27)
Visible crew/equipment: When Madison enters Bloomingdales, you can see the reflection of Ron Howard in one of the mirrors. (00:37:45)
Visible crew/equipment: Camera crew reflection visible on Squirrel Murphy's helmet. (01:25:05)
Visible crew/equipment: In every shot where "the kid" is driving the red sports car, you can see that there is nobody in the car with him - Elaine should be in the passenger seat. Even slumped over unconscious, she'd be visible. (00:13:25)
Visible crew/equipment: When Samantha and her mother are talking in the kitchen you can see the boom mic's shadow on the cabinet between them.
Visible crew/equipment: A short scene opens with an alternate couple in an opposing hotel suite to the one the bachelor party is in full swing at. The guy relaxes the woman by telling her he is just going to open the window for some fresh air, and as he walks to that window and is about to open it, the boom mike can be seen. This appears on the Australian VHS release of this movie. (01:16:30)
Visible crew/equipment: When Kermit is at Sardi's (the restaurant), when the waiter asks to take his coat, Kermit says, "No!" Look right beside Kermit. You can see the top of Jim Henson's head for most of the shot. Also, when Kermit rises from beneath the table to put up his picture, you can see Jim Henson's head pop up as the camera pans up.
Visible crew/equipment: In the "Straighten the Rug" dance scene, when Nick runs up the wall and does a backflip, it is clear that he is being held up by wires. The filmmakers did a good job rotoscoping the wires out against the wall, but when his legs pass behind the wires and harness, they have not been taken out at all and are visible. (Freeze-frame when he is completely upside down for the best view.). (01:07:10)
Visible crew/equipment: When Allison drives and collides with the police car, as her car flies up part of the angled ramp used for the aerial stunt is seen to the right of the police car. (00:35:00)