Immediately after pouring the blood of lamb, Balthazar places the jar to the left of the box of salt, but immediately after (and for the rest of the episode) the bloody jar is right of the bottle of alcohol.
Misha's shirt collar alternates from over his coat lapel to tucked under in different camera angles during his first meeting with the brothers.
When Sam and Dean first talk with Misha, a trashcan with a red bag can be seen by the trailers in the background. A few moments later, in the close up of "This must be fake mine." there is nothing near the trailer.
When Virgil attacks in the alley, Misha's over-shirt is straight, but during the "... and pulleys/What?" shot it is hanging off his right shoulder.
When Baltazar takes the bag containing the bone of a lesser saint out of the desk drawer the bag is tied at the top next shot, it is open.
When the boys are being driven to Jared's home in Canada, Dean sees the road sign and say "Dude, we're not even in America". Actually, Canada IS America. He should have said "We're not even in the U.S.".
The raw side of "Hollywood" flats don't look like that.
It's funny how both Jared and Jensen are still wearing makeup after their makeup has been "removed".
Balthazar is rummaging through Bobby's kitchen looking for ingredients and [to build suspense] he is having a hard go. As any chef knows: gather everything together before you begin cooking.
If the concept of this episode were to run true then Sebastian Roché's stunt man would have entered and hit his marks while the camera rolled.