(at around 1 min) The stuffed bear and duck on the receptionist's desk are standing up when shot facing the receptionist, but when shot from behind the receptionist, the bear is laying on top of the duck.
When Vick tells Shawn he's fired, his hands are clasped together right under his chin. It then cuts to a different angle and Shawn's hands are not even near his head.
When Henry grabs young Shawn by the shirt, he does so from the back. In the next shot he holds the shirt by the front.
Shawn takes pictures of the crime scene photos on Lassiter's desk using his Motorola RAZR phone, pressing the same button rapidly to take several pictures in a row. However, this particular model of phone requires the user to save and name each picture individually before being allowed to take another; it would be impossible to take multiple shots so quickly.
While assigning Shawn and Gus to the job of hiring her a nanny in the beginning of the episode, Chief Vick twice says "I cannot stress how important this is" rather than the correct "I cannot stress enough how important this is."