Revealing mistake: When Ed is in the good shake machine, if you look through the little glass window below him, Ed isn't actually in the good shake machine, since his shirt and nametag isn't seen here.
Visible crew/equipment: In the end of the movie when Kurt is arrested, the camera and a crew member wearing sunglasses are reflected in the side of the police car.
Visible crew/equipment: When Dexter is driving with his friend in his mom's car you can see a police officer stopping traffic for the shoot, when they make a right turn on to the street where the car accident occurs.
Continuity mistake: When Mr. Bailey tells Ed to get in the kitchen and start making sauce, he points to the general direction of the kitchen. In the next shot he is pointing a different direction.
Revealing mistake: When the guy asks for a good shake and the weird kid shakes him you can see the people that work at the fast food restaurant moving back and forth very rapidly. This makes the shaking scene an obvious rewind and playback sequence.
Other mistake: When Mondo Burger opens for the first time, Kurt and his friends walk out to look at Good Burger. Kurt looks down for the actor's mark and puts his head up when he stops.
Other mistake: When Dexter is squirting ketchup and mustard at the Mondo Burger workers he squirts them twice and they are covered with ketchup and mustard.
Revealing mistake: When Ed is driving back to Good Burger from the date, he's turning the wheel a little bit, but if you look at the background, he's going straight.
Continuity mistake: In the scene when Dexter and Ed are thrown into the cushioned room in the insane asylum, Ed's hands are not handcuffed. The camera then shows Dexter and Ed says to look what he can do. As he is jumping off the wall you can see that his hands are handcuffed. The next time it shows Ed jumping, his hands are not handcuffed anymore.
Continuity mistake: As Mr. Bailey brings back a Mondo Burger, Spatch picks it up with a spatula. The close up scene shows the spatula bending. Not only should the burger have fallen off, as Spatch throws the spatula back down, the spatula is straight again as he grunts off.
Continuity mistake: When Dexter is having lunch, there are trays behind him. When Mr. Wheat is with him, the left trays are tall. When Ed comes, the left side is short.
Continuity mistake: When Dexter and Ed get back to Good Burger after being chased, he runs in and tackles the old lady. When he hits her, he is parallel to the lady's body with his arms wrapped around her. But when he lands, he is laying perpendicular across her with his arms outstretched.
Continuity mistake: When Dexter is eating at Good Burger before he works there, he is having milkshakes. In one shot, the shakes are in one formation, and, in another, they are in different places.
Continuity mistake: When Ed is making his sauce, there's one shot of the sauce with nothing on top of it, but in the next shot, although nothing has been added, there's something on the top.
Continuity mistake: When Kurt calls the kitchen he says that he wants the burgers bigger. When he gets off the phone he says that the burgers are three times the size of Good Burgers. He never told the kitchen how big to make them.
Continuity mistake: When Dexter is taking a walk with his date after mini golf they walk by Good Burger, but in the next shot they're far away from Good Burger.
Continuity mistake: When Dexter is on a date with the girl from Good Burger, she hits her ball and puts her head up, but in the next shot her head is down again.
Revealing mistake: At the beginning when Ed accidentally switches between the baby and the basketball, look closely in the background when Ed realises that he is holding a basketball, and the baby getting thrown through the hoop in the background is a doll.
Other mistake: Ed's golf ball didn't hit anything to make it fly back and hit Roxanne.
Continuity mistake: When Ed is fixing the Good Shake machine, a stack of cups are straight but in the last shot when Ed is spinning around, the stack of cups are flipped over.
Answer: "(Not Just) Knee Deep" by George Clinton And The Funkadelics.