When Jesse interrupts Monica's exam, he spills blue ink on the professor's pants. In the next scene, the stain has a different pattern.
At the start, when Jesse is driving the stolen Porsche to L.A, he is seen taking off his jacket. the next shot is a shot from behind, which shows him with his jacket still on. In the shot after that, he is seen continuing to take off his jacket.
After Monica puts on the pink dress and climbs into Jesse's car, they take off. As they're driving, they zoom over a hill in the road, and they are viewed from the back. You can see that Monica's necklace has become unfastened.
The red Eldorado has 4 working headlights when they steal it from the movie theater parking lot, but only 3 when they arrive at The Pines.
In the newspaper article that mentioned the death of a CHiP Officer, the text of the article has absolutely nothing to do with the headline.
There is very obvious rear projection when Jesse and Monica are in the MGB.
In the "Caught in a Trap" shower scene when Jesse enters the bathroom, a camera man can be seen reflected in the TV.