A Research Study and Czechoslovakian Wedding Pastries - S2-E5
Continuity mistake: When driving back from the second study, Missy is looking out of the window when Mary says something about going out to eat. When the camera angle has changed to show the whole car, she is now looking past Sheldon into the car. (00:15:40)
A Crisis of Faith and Octopus Aliens - S2-E3
Continuity mistake: Towards the end of the episode, Mary takes a slice of pizza and takes a bite, holding it with two hands. When the shot changes to an over-the-shoulder shot from behind Mary, you can see her left hand has no pizza in it, unlike the shot from the front. (00:15:30)
Continuity mistake: When Sheldon is putting his mittens on at the table he his seen putting the first one on and the second one is on the table, the shot changes and the mitten is no longer on the table. He raises his hands and both hands have mittens on them. (00:01:55)
A Sneeze, Detention, and Sissy Spacek - S1-E13
Visible crew/equipment: When Sheldon is running away from Mary in the garage, the set lights are reflected in his helmet. (00:18:00)
A Computer, a Plastic Pony, and a Case of Beer - S1-E12
Continuity mistake: When we see Sheldon in bed at the start he's either flat on his back or on his side depending on the shot. (00:03:45)
A Patch, a Modem, and a Zantac - S1-E6
Factual error: At the start of the episode when someone is talking at the podium, there's a a periodic table behind him on the wall. On the left of barium, 'Sc' for scandium is there instead of 'Cs' for cesium. (00:00:40)
Continuity mistake: When Sheldon and Missy are sitting at the table, Missy puts a paper in the basket in front of her. A couple of shots later when she says "sounds right" the paper has disappeared. In the next shot it reappears, in a different position than it was before. (00:06:20)
A Math Emergency and Perky Palms - S2-E15
Continuity mistake: When talking to Mr Gilford, his arm is constantly on or off his walking stick, depending on the shots. (00:12:10)
A Nuclear Reactor and a Boy Called Lovey - S2-E13
Continuity mistake: When George is talking to Veronica at the lockers, there is an extra behind him who is constantly appearing and disappearing at the lockers behind him. (00:02:00)
A Nuclear Reactor and a Boy Called Lovey - S2-E13
Continuity mistake: When Georgie is writing a letter to Veronica, the handwriting changes drastically from when we first see it to when we see it a few seconds later. Note Veronica's name. (00:10:30)
A Tummy Ache and a Whale of a Metaphor - S2-E12
Continuity mistake: When Sheldon comes round from his op, the way he holds his cup, and the way the straw faces, changes between shots. (00:09:30)
A Stunted Childhood and a Can of Fancy Mixed Nuts - S2-E10
Continuity mistake: When Missy and Paige are tying George's feet together, the position of their hands and the rope is constantly changing between all the camera angles. (00:08:20)
A Stunted Childhood and a Can of Fancy Mixed Nuts - S2-E10
Continuity mistake: When we see Missy and Paige in the bedroom, Paige has something in her hands that swaps position between two consecutive shots. (00:07:10)
Carbon Dating and a Stuffed Raccoon - S2-E7
Continuity mistake: Sheldon places his membership cards down on a flat surface. He puts Radio Shack first, followed by Star Command, almost entirely covering it, leaving just a small section of red along the top. When the shot changes to a wide-angle one, the Star Command card has moved down and more red is visible above it. (00:01:00)
Seven Deadly Sins and a Small Carl Sagan - S2-E6
Continuity mistake: When Gene is showing Mary the poster, he stops at the bottom of "Heck House" before revealing the rest of the poster. When the shot changes, part of the "Gene Lundy" wording is now visible, and then he goes on to show the rest of the "Gene Lundy" part. (00:09:50)
A Research Study and Czechoslovakian Wedding Pastries - S2-E5
Continuity mistake: At the dinner table, when discussing the research study, Missy switches from eating to arms folded several times between instant cuts. (00:04:10)
A Financial Secret and Fish Sauce - S2-E4
Continuity mistake: At Tam's, the food around Sheldon's mouth changes size and position between shots. (00:10:30)
A Crisis of Faith and Octopus Aliens - S2-E3
Continuity mistake: Sheldon asks if his dad checked Mary for ticks. When he does this, he is covering his mouth and nose with the collar of his shirt. When we see George from behind Sheldon, Sheldon isn't covering his face; then, as we see Sheldon from the front again, he lowers his shirt from round his mouth. (00:14:50)
A Crisis of Faith and Octopus Aliens - S2-E3
Continuity mistake: When the church receptionist is talking to Mary about life being precious, she is holding the mug differently in different shots. (00:04:50)
A Crisis of Faith and Octopus Aliens - S2-E3
Continuity mistake: Just after the opening titles, Mary is preparing a salad when the phone rings. Between the shot of Mary and Connie and the shot of just Mary, the position of the items in her hands changes rather drastically. (00:01:50)
Answer: Some people just have a dislike for someone that can't be explained. Could be as simple as the way he's dressed.