When Jim and Eddie use the bedroom door of the trailer they cast shadows on the matte background picture of the restaurant.
Outside the courthouse, when Jim is explaining to Richie that he's quitting the case because of mob ties, his line detailing how he's laid the "heavy theoretical groundwork" on the case is flubbed; James Garner pronounced as "heavy theatrical groundwork".
As Jim gets in the Firebird, just before the opening credits roll, three crew members and a light stand are visible in the reflection on the door.