Summer Sausage, a Pocket Poncho, and Tony Danza - S1-E21
Continuity mistake: When George Sr. is cracking the claw of the lobster, he goes from holding the cracker to holding a fork instantly. (00:16:38)
A Mother, a Child, and a Blue Man's Backside - S1-E18
Continuity mistake: When Sheldon is shown the M.I.T leaflet, the way it's displayed to him changes between shots. (00:09:20)
A Mother, a Child, and a Blue Man's Backside - S1-E18
Continuity mistake: When the guidance councillor holds up the leaflet for Caltec, where she holds it changes between front and rear camera angles. Note the distance from the top of the leaflet. (00:09:10)
A Computer, a Plastic Pony, and a Case of Beer - S1-E12
Continuity mistake: When Georgie meets Sheldon by the school lockers, he grabs his lunch bag from inside. From the opposite angle, he's taking it out again.
A Computer, a Plastic Pony, and a Case of Beer - S1-E12
Continuity mistake: When Mary lies in bed with Meemaw, the way Mary's right arm and hand lie on top of the left arm differs between shots. Check the way the hand covers the sleeve, for example.
A Computer, a Plastic Pony, and a Case of Beer - S1-E12
Continuity mistake: When Sheldon and Missy lie in bed together, her right hand is on top of her left. A shot later, it's the opposite way. (00:09:16)
A Computer, a Plastic Pony, and a Case of Beer - S1-E12
Continuity mistake: During the spaghetti meal scene, the way Missy holds her fork changes between the back and front shots, especially during the last shots.
A Computer, a Plastic Pony, and a Case of Beer - S1-E12
Continuity mistake: Sheldon pinches a loaf of bread, but a shot later he's pinching spaghetti. This changes back and forth a couple of times.
A Computer, a Plastic Pony, and a Case of Beer - S1-E12
Continuity mistake: When the family leaves the computer store, Missy's candy sucker swaps randomly between being in her mouth or not between one frame and the other.
Demons, Sunday School, and Prime Numbers - S1-E11
Continuity mistake: When Sheldon meets Ira, he is holding a pen which disappears a shot later.
Demons, Sunday School, and Prime Numbers - S1-E11
Continuity mistake: When Sheldon is in bed, he is holding the bible slightly upwards. A shot later, it's down, lying against the sheets.
An Eagle Feather, a String Bean, and an Eskimo - S1-E10
Continuity mistake: While the teachers are chatting, the PE teacher is grabbing his glass with the left hand. A shot later, the glass is suddenly on his right hand.
A Stunted Childhood and a Can of Fancy Mixed Nuts - S2-E10
Continuity mistake: Meemaw comforts Dr. Sturgis while he says, "I let you down," placing her hand on his shoulder. From the opposite angle, her arm is by her side.
A Stunted Childhood and a Can of Fancy Mixed Nuts - S2-E10
Continuity mistake: When Dr. Sturgis says his legs are "a bit wobbly," he looks straight ahead. From the opposite angle, he is looking at Meemaw.
Jiu-Jitsu, Bubble Wrap, and Yoo-Hoo - S1-E17
Continuity mistake: When Sheldon is wrapping bubble wrap around his torso, it goes from neat to messy between long and close shots. (00:04:50)
Killer Asteroids, Oklahoma, and a Frizzy Hair Machine - S1-E16
Continuity mistake: At dinner, Missy says her day was fine until she learnt they can't afford cable. When she does, she has her fork over her green side bowl. When the shot changes, her fork is now over her main plate. (00:05:10)
Killer Asteroids, Oklahoma, and a Frizzy Hair Machine - S1-E16
Continuity mistake: When Sheldon grabs the school intercom, the principal has a piece of paper folded up out of the folder in his lap. When the shot changes, this piece of paper has disappeared as it should be visible in both shots. (00:04:00)
Dolomite, Apple Slices, and a Mystery Woman - S1-E15
Continuity mistake: When Sheldon is doing laundry, the two items in/on the adjacent machine to the one he is throwing clothes in, keeps changing position between all the cuts of Sheldon. (00:13:10)
Dolomite, Apple Slices, and a Mystery Woman - S1-E15
Continuity mistake: When Sheldon is talking to the girl in the library, her left arm is constantly changing position depending on the camera angle. (00:01:30)
Dolomite, Apple Slices, and a Mystery Woman - S1-E15
Continuity mistake: When talking with Tam in the library, the way Sheldon holds his floppy disk keeps changing. Note his hand in relation to the hole in the middle. (00:00:50)
Answer: Some people just have a dislike for someone that can't be explained. Could be as simple as the way he's dressed.