Supernatural

When confronting Greeley's spirit, Dean yells at Sam to hurry up. Given Sam is secretly salting and burning Greeley's bones, Dean yelling at him isn't the best idea. Fortunately, Greeley doesn't bother to investigate what Sam is doing.

There is no way Sam would've been able to find the grave, unbury the body, salt and burn the bones in the same while Dean just shot the ghost and was smashed to the wall, with the ghost trying to kill him. He didn't have the time, it all happened too quickly.

In the final scene when we see the alleged dead Trickster in the chair, as the scene starts, you can see Richard Speight's chest rise as he takes a deep breath and holds it.

In the end, the bed and disco lights are still on the stage even though all the stuff that the trickster supposedly conjured up faded away when he was stabbed. This should have alerted Sam and Dean to the fact that the trickster was still alive, as seen at the end of episode.

Why didn't Dean track Sam's phone when he first went missing like he did after Sam knocked him out in the motel room?

When Sam hit Dean with the gun, Dean collapsed with his right hand beside his body. However, the next shot showed his right hand was beside his head.

Jo had a bruise on her forehead when Sam tied her to the pole but the scene she's helping Dean up from the water, looked more like she had a cut. Back to the bar patching up Dean's wound, she had a bruise again.

When Sam puts his hand on Dean's shoulder you can see Dean grabbing Sam's arm because of the pain. Then the camera switches toward Sam and then back to Dean grabbing Sam's arm again.

Dean's cell phone still works even after he fell into the water.

Trivia: When Dean is on the website to locate Sam via GPS, he is logged in as "Dean J. MaHogOff.

When Zack's room is shaking and his TV falls over you can clearly see that the power cord is neatly tied up and unplugged.

According to Dean's cellular phone listing, he's playing Kashmir by Led Zeppelin, but he's actually playing Down On Love by Jamie Dunlap.

When Zack's room is shaking, his lamp falls and breaks, but the light from the light bulb stays on.

When Sam is talking to the patient in the mental institute at the beginning of the show, he pulls a metal chair up to talk to her. No top-security mental hospital or low-level clinic would ever place any kind of movable furniture in a patient's room because the patient could harm him/herself or others.

At the 34:47 mark, the Sherri "corpse" is clearly breathing.

When Ronald goes to the bank and locks the doors, he then shouts "This is not a robbery!" and shoots some shots into the ceiling. His shots are at about a 70 - 75 degree angle and there is no way that the debris would have fallen right on him from above, not with the vaulted ceilings.

When Sam and Dean are showing their badges to Ronald they are both holding them with their left hands but when the camera angle switches, Dean is now holding his badge in his right hand.

There is no way that ordinary ceiling tile will support a human body.

Trivia: When Susan gives Dean's credit card back, she says, "Here you go, Mr. Mahogoff." Mahogoff is a slang term, usually combined with the first name Jack, for when you "want to spend a little time alone."

The brothers are kicked out of the hotel, it shows them drive out, with Susan standing on the steps. And at the end of the episode they use the same shot.