House, M.D. (2004)

Season 2 generally

Continuity mistake: Chase is 26 years old in season one. In season two he's 30.

TB or Not TB - S2-E4

Continuity mistake: When Dr. Cameron is walking with Dr. Charles to go for a procedure, he barely has any facial hair before they enter the stairwell, but once they reach the stairwell his facial hair has increased quite a bit. His hair is also parted to the left prior to entering the stairwell and once in the stairwell it is parted on both sides.

Deception - S2-E9

Continuity mistake: When House and Anica are outside before he gives her the injection, watch the amount of snow on the lapels of her coat. It changes back and forth between barely any snow and a lot of snow several times without her ever brushing any off.

Guy

Failure to Communicate - S2-E10

Continuity mistake: When the scene starts with Stacy and House in the airport about to start talking, she has a pen in her mouth. In the very next shot it's on her ear, and in the next it's gone. It switches back and forth throughout the rest of the scene.

All In - S2-E17

Continuity mistake: Ian (the patient) moves his hand while he is in cardiac arrest, then almost immediately, Chase checks Ian's pulse and the sleeve of his shirt changes position. (00:31:10)

All In - S2-E17

Continuity mistake: In Season 2, Episode 17 - "All In", the young patient goes into respiratory arrest. You see the doctors remove the pillow from underneath his head to put the breathing tube in, but in the next shot, the pillow is back.

Forever - S2-E22

Continuity mistake: About 5 minutes in, when Foreman struggles with opening the coffee package, House rips the entire top of the package off with his teeth. In the following shots, you can see that the coffee package merely has a corner ripped off.