Other mistake: Lois digs up Chloe's grave site to unearth her casket. It is obvious that the casket is not buried six feet deep. You would think, with all that is going on, that LuthorCorp would have at least buried the casket deeper to deter inquisitive eyes and maybe throw in a few scattered bones for good measure.
Day 2: 5:00 A.M.-6:00 A.M. - S2-E22
Other mistake: In the beginning of the episode when the show is starting and the credits are rolling, instead of Billy Burke the credit is shown as Billy Gurke.
Other mistake: For secret agents, Sydney and Dixon are not very dedicated to secret identities. At several points they refer to each other by their real names in front of other people while they are under aliases. Examples include The Confession party and The Coup Las Vegas scenes.
Other mistake: In the party/orgy scene where Aetius is showing off Rome to Attila, one can see a woman with her back to us reveal herself to a man and woman. Despite her veil, one can see her thong underwear. This type of underwear is a 20th century innovation.
My Overkill - S2-E1
Other mistake: When JD and Turk get coffee from the street vendor, Turk tips the cup at an angle which shows they are empty as it doesn't spill.
Other mistake: In the episode "The Mating Game," Ashley states, "Terry, sorry about last night." Unless she was with Jimmy and Ashley, because she is referring to when Ashley yelled at Terry. But that was 2 days ago, so why is she saying "last night" when it was 2 days ago?
Replacements - S1-E4
Other mistake: When Heffron is taking his throw at darts, he states that he needs a "double seven". When he takes the throw, the dart goes into the treble eight (an earlier close-up confirms that the board has the standard Gamlin configuration), yet, from the reaction he gets, he's made the throw he was going for. (00:04:40)
Other mistake: Nate has his pager with him when sitting his exam paper. The pager goes off and he takes it from his pocket and reads a message without any comment from the exam invigilator.
Other mistake: In this episode, Eric tries to destroy a mutant, apparently unaware that Rangers don't destroy mutants but freeze them. Yet in Quantum Quest and Clash for Control, he froze a mutant.