Continuity mistake: The glass table is rotated one way and then gets rotated 90 degrees in the next shot, with no explanation.
Continuity mistake: At the bowling alley after Jim bowls and walks back to the group and talks to them, we see a young man in the background with a grey top about to bowl. Then there is a quick shot that cuts to Adam and, then the shot cuts back to Jim and the guy in the background is about to bowl again.
The Surprise - S5-E3
Continuity mistake: As Jackie and the boys get in the car to go to the bar, Jackie is entering the back of the car, but when they arrive at the bar, she gets out of the front.
Continuity mistake: At the end, Adam is going through all the red tabs on the bunch of keys holding them. Camera changes and all of a sudden the tab is green.
Continuity mistake: When we see Martin in the car at the start the position of the bowl changes between certain angles. (00:02:45)
Continuity mistake: When Martin gets covered in ketchup the position is constantly changing. (00:02:00)
The Funeral - S4-E5
Continuity mistake: When Jonny causes the coffin to fall, we can hear the wood snapping and the Rabbi says "you've broken the lid." Yet in the next shot the whole thing is intact. No sight of anything broken.