Continuity: When Chief Webber is sitting alone in the dark his watch says 6:30, seconds later Dr. Bailey comes in and tells him that Denny Duquette died at 7:42 that evening.

Continuity: In season 2 episode 11, Olivia walks into an elevator with Izzy already inside and they go up 3 floors. When Izzy leaves the elevator, it's the same floor from which Olivia came (same equipment and decor).

Continuity: When Izzy, George and Christina walk over to the vendor, talking about Dr. Sheppard and Meredith, Izzy is in the middle, eating snacks from a packet. Between shots she alternates from holding the pack either up or down.

Visible crew/equipment: When they arrive at work near the beginning, as Meredith exits the car, and walks past, the boom mike is reflected in the car, in front of her, following her along.

Continuity: Episode 2 of Season 1 - When Meredith drops all the files in the elevator to make out with Derek, they are in a different position from when she picks them up.