In the first scene where Larry and Jeff are talking about Jeff's separation Larry is asked by the waitress if he would like some coffee. Larry and Jeff continue talking for a couple minutes and no one is seen filling up Larry's coffee cup - but Larry suddenly starts drinking out of it, as if there's actually coffee in it.
At the first meeting of Larry and Jason we can see through the window in Jason's office. We can see a change from daylight to darkness, to daylight, to darkness. The scene ends with a cut to the outside of the office-building and it is bright daylight again.
When Larry lifts the bundle of Jeff's clothes from the bed there is a burgundy garment at the top. This garment moves to the middle of the bundle when he is carrying it around.
When Larry is driving to the hotel with Jeff's mother, you can clearly see reflected in store windows that the car is on a trailer.