Continuity mistake: While eating a burger, Berger wipes off food from Carrie's mouth and the ketchup bottle magically disappears from the table.
Continuity mistake: While the girls wait for their table, check the apple on Sam's cocktail and you'll notice that the glass' position is inconsistent between shots.
Continuity mistake: Right when the episode starts Carrie is grabbing a long piece of melted cheese that stretches out of her burger into her mouth. Half a second later the burger and cheese have vanished. And her arm is lowered.
Continuity mistake: When Sam sprays whip cream on the guy, she puts a drop by his right nipple and a bunch around his navel. A shot later, cream appears on the right side of his abs. (00:19:50)
Visible crew/equipment: In the close-up shot of Big in the tub, the reflection on the bottle shows two lighting screens, a boom mic pole and a silhouette, most likely a crew member. (00:24:36)
Continuity mistake: When Carrie gives Berger his sound machine gift, he either holds it by his side or next to his chest, depending on the shot. (00:26:10)
Continuity mistake: When Carrie and Sam walk down the street and talk about Berger's ex, the passers by differ between the wide and close-up shots.
Continuity mistake: Miranda's baby is definitely not the same baby that appeared in the previous episode.
Continuity mistake: When Miranda takes out the strip of condoms, they swap between falling straight to zigzag shape between shots. Also the way she holds them changes between shots.
Continuity mistake: Charlotte says she has to go to the synagogue and one can see Miranda is holding her glass at chest level. From the opposite angle it is by her mouth.
Continuity mistake: Sam goes to flirt with the waiter while Charlotte has a sip. A shot later her arm is already down, without her having lowered it.
Pick-a-little, talk-a-little - S6-E4
Continuity mistake: When Carrie has dinner with Berger, the position of her right arm swaps between raised or lowered.
Pick-a-little, talk-a-little - S6-E4
Continuity mistake: When Miranda gives some advice to the girls, the passers by behind her disappear in the following shot.
Pick-a-little, talk-a-little - S6-E4
Continuity mistake: When Sam has dinner with Jerry and does the secret service agent fantasy, his hands swap between lying on the table or raised by his face.
Lights, camera, relationship - S6-E5
Continuity mistake: Carrie walks with Berger while she holds an open umbrella next to a window shop. Shot swaps to the inside of the place, she keeps walking by the very same spot but now her arm is lowered and the umbrella is closed. (00:00:45)
Lights, camera, relationship - S6-E5
Continuity mistake: During lunch, when Carrie tries to fix a date for Charlotte, Charlotte's hand is on the table or not. (00:03:49)
Lights, camera, relationship - S6-E5
Continuity mistake: When Charlotte and Anthony are talking on the park bench, Charlotte is looking at Anthony to her right as she says "No next, it doesn't work like that". She then turns her head back to face forward, when she is through speaking. But the very next shot, Charlotte has her head turned towards the right, and is facing Anthony again. (00:10:20)
Lights, camera, relationship - S6-E5
Continuity mistake: Sam, tells Jerry they have to work on his abs, turns her head and stares at him. A shot later her head is turned sideways and she is looking away. (00:12:58)
Lights, camera, relationship - S6-E5
Visible crew/equipment: Set lights and screens are reflected on both helmets' surfaces. (00:20:33)
Lights, camera, relationship - S6-E5
Continuity mistake: When Jack and Carrie are arguing in the street, Jack stretches out his arms widely asking for a hug. Carrie starts walking towards him, but in the very next shot suddenly Jack's arms are down by his sides. (00:23:35)
Answer: A popular brand of sexual lubricant. See http://www.k-y.com/index.jsp.
J I Cohen