When Lorelai gets out of bed you can see that she is already wearing the blue dress that she is supposedly putting on off screen once she is out of the bed.
When Rory visits Lorelai at the Inn, Lorelai pours her a coffee in the dining-room. As they walk back, Rory inclines the mug and you can see very clearly there is no coffee in that mug.
The mug Lorelei puts coffee in and hands to Rory has a reddish design on it. When they are walking away from the dining room, the mug Rory is holding has a black design on it.
When Lorelia is laying in Christopher's bed, GG runs in. Christopher mentions having fun at school. Lorelia went to Christopher's after Friday Night dinner, making it saturday, therefore GG shouldn't be going to school.
Taylor says that he's Town Selectman, but he's now the Mayor after he lost Town Selectman to Jackson.
When Taylor is explaining the red light camera, he says it will take 3 successive photos of the person running the red light. When Kirk is doing the example drive, the camera clicks and the flash goes off 4 times, not 3.