Continuity mistake: When Joey and Pacey are standing in his restaurant, watching Dawson and the others come there is a shot of Joey with her hair tucked behind her right ear. But in the next shot of her, a close-up, she suddenly has all her hair pulled forward around her face. Her arms haven't moved between shots.
Continuity mistake: When Jack is pulled over near the start the creek behind him is empty, and remains like that throughout the scene. Then for the last few shots before he drives off again a sailboat has appeared in the background, literally out of nowhere.