Continuity mistake: Tara is sitting at her desk and tells Max they will have sex the following night, and she teases him that she "Might even bring some props." Right as she says this line, the camera cuts. In the first shot, she has one pencil in each hand, but in the second shot, suddenly both pencils are in her left hand. The position of her hands changes between cuts as well.
Continuity mistake: In the previous episode when Damon and Caroline sleep together Caroline's bra is dark pink, in this one when she wakes up her bra is blue.
Episode #1.4 - S1-E4
Continuity mistake: Mr. Knightley has just confessed his love for Emma. She is about to kiss him and is holding his face with both of her hands. Her left index finger moves from being right on his ear to being behind it and further down on top of his hair. (00:48:40)