Continuity mistake: At the end of the show when Cyrus is sitting at the end of the bed, he puts the 2 champagne flutes next to the bucket, when they flash back to the bucket they are gone, then they are back again.
Factual error: The wedding is at a Christian church preformed by a Christian minister, but at a Christian wedding the groom stands on the Minister's left side and the bride on his right. The way Ryan and Cate stand is the way that the bridal party stands at a Jewish wedding.
Continuity mistake: When Joey comes over to the house looking for a job, Melissa's purse keeps changing shoulders.
Continuity mistake: Louise has a nose ring in her left nostril, it moves to her right nostril and back. (00:36:00)
Continuity mistake: Season 1, episode 17, "The Man at the Altar". When Annie is getting dressed after sleeping with Crowley, what she is wearing, how she is wearing it and where her arms are changes between each shot.
Continuity mistake: When the hostages try to get some rubble to catch fire, they find that everything is covered in some flame retardant stuff. Yet, in the very first episode one of the very first things they do is to make a small fire to get the fire alarm going.
Members Only - S1-E2
Continuity mistake: In the last scene, when Daffy and Bugs are talking to each other, Daffy's towel is yellow and in the next shot, it's white.
Continuity mistake: In episode 3 or 4, one of the characters is knocked out and lying on the floor in the Russian sub. He is on the 'left' side of the shot most times he is shown, but occasionally he's on the right.
Continuity mistake: Jack rushes in at night to save Kate who has been drugged by the evil professor. Jack resuscitates her and calls an ambulance. When the ambulance leaves it is bright daylight.
Factual error: The Merchant Navy rank insignia is very poorly researched. Each officer seems to have a different style of insignia, despite working for the same company and they incorrectly wear rank insignia on the shoulders of their blue uniforms as well as the cuffs. The main character, Junior Third Officer Mortimer, wears a bizarre mix of insignia, apparently consisting of a Royal Navy petty officer's sleeve badge, a Royal Navy chief petty officer's cuff buttons, and a rank badge of three inverted chevrons on his shoulder boards that doesn't seem to resemble anything from reality. In reality, he should simply wear a single cuff ring (or shoulder bar in white uniform).