Visible crew/equipment: When Doug mentions about a mistake in the word jumble, look in the glass above him to see a boom mic reflection clear as day. (00:01:45)
Dire Strayts - S2-E8
Continuity mistake: When Doug is talking to Ray at the table, the position of his beer changes between shots. Watch the label. (00:02:45)
Dire Strayts - S2-E8
Continuity mistake: When Doug talks about grown men not being able to watch the game, the amount of head on his beer changes instantly. (00:02:40)
Queasy Rider - S2-E1
Continuity mistake: When Doug starts to explain to Carrie about getting the bike, he has his hands on the edge of the back of the chair. Camera cuts and now they have moved close together in the middle of the chair. (00:07:55)
Queasy Rider - S2-E1
Visible crew/equipment: When Carrie gives Arthur the iron, six stage lights are reflected in the iron itself. (00:06:25)
Queasy Rider - S2-E1
Visible crew/equipment: During this entire episode, you can see lots of stage lights reflected in the motorcycles chrome parts.
Queasy Rider - S2-E1
Revealing mistake: When Doug is seen giving a lift to Arthur, and Arthur is holding on very tight, the background is so very projected. (00:13:05)
Queasy Rider - S2-E1
Audio problem: When Doug enters the kitchen wearing his leather jacket and tells Carrie he just got in from riding the bike, you can see the bike parked just outside the kitchen window in the backyard. If that was true it would have been heard from inside the kitchen, as motorcycles are quite loud. (00:11:35 - 00:12:15)
Wild Cards - S2-E20
Other mistake: All players' cards were dealt face down in the blackjack game. At one point, the dealer pulled a 20 and immediately collected everyone's chips. The dealer couldn't have known that he beat all players at the table with a 20 when he couldn't see anyone's hand.
Wild Cards - S2-E20
Factual error: In the show, the blackjack players are dealt two cards face down and don't show their hand to the dealer until they either make a hand or bust. In reality, blackjack players in Atlantic City are dealt both cards face up and are never allowed to handle the cards for any reason. If both cards were dealt face down and handled by the players, there would be a strong opportunity for cheating. In addition, if their math wasn't adequate, they might take extra cards that they shouldn't have been dealt.
Continuity mistake: The lady walks away from Carrie's desk with some flowers. When she does, there are three petals on Carrie's desk which disappear without being touched. (00:06:10)
Soft Touch - S2-E22
Revealing mistake: When Carrie is trying to park, the position of the shadows on the ground is changing drastically between shots. This cannot be attributed to it taking Carrie a long time to park, as the shadows move forward and back. (00:02:00)
Continuity mistake: The baseballs on the stand move apart when Doug picks up the first ball to win Carrie a frog at the boardwalk. (00:17:24)
Soft Touch - S2-E22
Continuity mistake: When Arthur is trying to get Mickey to take a sip of water, Mickey crosses his arms. When the shot changes back to Mickey, he crosses his arms again. (00:15:30)
Wild Cards - S2-E20
Continuity mistake: When Doug calls Carrie to confess, note the phone cable. The loop changes between several shots from a neat loop to an extremely messy loop. (00:20:30)
Wild Cards - S2-E20
Continuity mistake: When Deacon is sat on the bed with all the poker chips, the position of the chips on the bed is constantly changing between shots. (00:14:00)
Other mistake: Carrie describes Susie as "one of her best friends." Earlier in this same season, the episode "Female Problems" was about her not having friends anymore. In fact, in that episode, she spent a whole evening calling any former friend that she could think of. She told Doug that they all had babies, hated her, or she hated them.
Visible crew/equipment: Lighting equipment is visible in the lower left corner of the shot of the outside of the Heffernan home. (00:14:42)
Frozen Pop - S2-E15
Visible crew/equipment: When Arthur puts his big red jacket on and goes downstairs, Carrie follows and tape markers are visible on the floor by the door. (00:16:30)
Frozen Pop - S2-E15
Continuity mistake: When Arthur comes in and shuts Doug's window, Doug's hand goes from open to closed between shots. (00:06:00)
Answer: Sara hasn't been mentioned in later episodes, and it suggested in later episodes that she never existed, and that Carrie is an only child. Kevin James stated that the producers couldn't think of an good plots to use with Sara, so they left her out.