When Ferg changes his name on the board, at first the letters are straight and read "Fer". Then Vic walks in, and it reads "Fe". Then Vic walks into the office, and the letters are crooked and read "F r" instead.
When Vic walks in on Ferg altering the names on the board, the letters he's moved and has yet to move keep changing with each shot.
The Ferg is supposed to be drinking beer at The Red Pony, but it's really water. There isn't any foam or bubbles.
At one point, Walt refers to Will Balint as "Will Bawan".