Audio problem: When Ren has his cousins teach Willard how to dance, he and Woody watch and comment. At one point Woody says "Less hips" and Ren says "A little less". When Ren says this his mouth isn't moving.
When Ren is dancing at the drive in, he starts dancing with a girl then stops to watch her. When he starts dancing again he moves slightly in front of her in the shot. Then in the next shot they are side by side.