When Michael is getting into bed with the red-headed librarian and pushing stuffed animals off, there are only two or three left on the bed as he throws one into the camera. When it falls off the camera, about a dozen more are back on the bed.
While he is rock climbing, Michael's hair changes between messy and neat.
The tape recorder Michael is holding is run by batteries. Therefore, he would not get shocked, even in the sauna he was in.
Just before Kyle runs over his girlfriend with the golf cart, she can be seen moving out of the way in the reflection on the cart's bumper.
Whenever the camera cuts to Natalie or Hurley in the interrogation scene, it's clear that Michael is not crying, even though he is heard sobbing.