Episode #1.3 - S1-E3
Continuity mistake: When Jin-a meets up with her friend in the coffee shop, she hands the friend a drink. The friend is shown placing her left hand on the side of the cup and her right hand on the straw. The camera changes angles and both hands are suddenly off the cup and straw. (01:14:49)
Witness for the Execution - S2-E15
Continuity mistake: When David and Maddie are debating whether or not to help Lawrence Everett, the towel David uses to wipe shaving cream off his face jumps around during the scene. It's around his neck, then in his hands, then on his shoulder, and back in his hands, etc. (00:15:40)
Caperberries and a Fat Detective - S3-E17
Continuity mistake: When they're on the phone with Adam, between shots the phone switches hands.
Continuity mistake: S51/E204: Billy and Lilly are hitting golf balls into a glass. Billy hits his ball into the glass and knocks the glass crooked. They never straighten out the glass, but when Lily hits her ball into it, it's straight again. (00:56:38 - 00:59:10)
Continuity mistake: In season one, Tara's neighbor Don's backyard was shown in the episode "Transition" - it had a patio and in-ground pool. This episode show's Don's backyard again when Tara and Max have sex, and it's completely different, indicating the scenes were filmed in different locations. Most noticeable is the fact that the in-ground-pool and patio are missing and the fences are different, with plants having grown all over them. While some time has passed since it was last seen, dialog in this season indicates that Don hasn't made any changes to the house or property in years, plus the fact that removing a pool and patio are relatively long and laborious processes, so the backyard should not look as fully developed as it does even if he did somehow remove them and replace the fence in the meantime.
Episode #1.5 - S1-E5
Continuity mistake: Gwan-su and the interpreter get into a kerfuffle. Gwan-su is shown holding onto him with one hand, but in a wide shot, he is suddenly holding onto him with both hands. The interpreter is also suddenly holding onto Gwan-su, something he wasn't doing in the previous shot. (00:52:30)