Continuity: In the episode "Informed Consent" (Season Three, Episode Three), House is about to inject Ezra Powell (Joel Grey) with what is supposedly a lethal dose of morphine. In the shots where they pan out to show House addressing the room at large, the syringe is very full, almost completely. When they zoom in on House holding the syringe, it is only filled a fraction of that much - maybe a quarter to a third. This doesn't happen just once, but every time they switch between shots.

Revealing: All the babies in the incubation room are, very evidently, dolls. When one is driven inside, his cries are heard but he doesn't mouth them. Submitted by Sacha

Continuity: The text with the symptoms written on the board changes several times, watch the letter F on the left. Sometimes it has a line across it, sometimes not. Submitted by Sacha

Continuity: Foreman is doing a sonogram of Mary's brain. As she comes out of her absent seizure Foreman's probe jumps from the left side of Mary's head to her right.