The Ex-Files - S1-E5
Continuity mistake: When Dharma is visiting her uncle (a dentist) and she's in the dentist chair, she has a little spot of water on her bib, the shot moves, then it moves again and the spot isn't there anymore.
Continuity mistake: When Dharma is at her parents' house and they are drinking coffee, her mom is putting the pot at the table, then the angle changes, and then she puts the pot on the table again.
The Official Dharma & Greg Episode of the 1998 Winter Olympics - S1-E17
Continuity mistake: While the guys are talking about the winter Olympics, the position and level of the bottle keeps changing all through the scene.
Continuity mistake: When Dharma and Greg are sleeping on the roof, and Greg realizes it's about to start raining, his arm on top of the blanket moves instantly between shots. (00:02:25)
Continuity mistake: In the first episode, when they meet as children, they seem to be about the same age. But later episodes refer to Greg as a 32-year-old lawyer, and after 2-3 years of marriage, Dharma is having her rebirthday party, which happens every 7 years. She is 28 then, so it seems like Greg is at least 5 years older, which is very noticeable as children.
Mr. Montgomery Goes to Washington - S1-E8
Continuity mistake: When they talk about how Abby used to date Don Henley, and Abby says "I'm pretty sure I was Witchy Woman", Larry's facial expression changes from laughing to serious from one shot to the next.