As the Cohen family returns to their home, in the view of the house, a black BMW 745 used by Sandy in first two seasons is visible, but in the next shot, they step out of a black Lexus RX 400h (car used by Sandy in season 4).
After Ryan in the hospital jokes about having the urge to listen to Death Cab and read comic books, Seth responds, "Well, that's too bad." But his mouth is not moving before the camera cuts away from the reverse shot to his face.
Taylor is obsessing about why her mother didn't call after the earthquake. Nothing is ever said about Summer's father contacting her, which is extremely odd since Dr. Roberts dotes on his daughter and would be very concerned for her safety.
Taylor says she is squeamish about blood, which is why Ryan doesn't tell her about his injury. But she has no problem later tending to her mother's wound after she shot her with a flare gun.