Continuity mistake: When Daniel threw his Crane Kick in the '84 movie, Johnny fell back and crawled away holding his nose as Daniel jumped around on one leg. But in the opening scene of this episode, Johnny is now prone on the mat as "Daniel" stands there in fighting position.
Strike First - S1-E2
Continuity mistake: During the pool party where Sam is hanging out with Yasmine and Moon, Yasmine holds her cup high in one shot but then low in the next.
Continuity mistake: While Daniel speaks with Cole at the car sales lot, the window of the truck beside them is up and down at least two times between shots.
December 19 - S3-E10
Continuity mistake: At one point during the first meeting of Vanessa and Ali, Vanessa is using a straw to play around with her martini glass. In the next shot, the straw disappears.