House fails to give the patient any kind of dental protection before amputating her leg without anesthesia.
The fireman takes a tank of compressed air with him to inflate the airbags, yet, when he opens the bag the sound of a compressor sounds. There is no compressor, so there should be no sound.
Foreman diagnoses the crane operator as having a "fracture of the right humerus", but splints his left arm instead.