When Melinda and Eli are talking while he is dropping her off at her house. As Eli says how nice it was of the pack rat to keep the doll parts he is shown to put his car keys in his back pocket. Then when the camera cuts to a different angle he has his keys in his hands again.
When "Sam" and Melinda are speaking next to her car, you can see the real Jim walking behind them in the window. He even turns to look at them both.