Continuity mistake: When Mike and Molly are in the bedroom, Mike is reading a book holding it in his right hand. He then proceeds to grab the book with his left hand. The shot changes to another angle and Mike grabs the book a second time. (00:06:30)
Continuity mistake: In Sam's, Mike says to Carl "See, No-one can bribe Mike Biggs" When he say's this he lowers his right arm which he had outstretched. When the shot changes, his arm is outstretched again. (00:08:10)
Continuity mistake: When Mike tells Molly how much going to the game makes Carl, Molly is picking up some books and placing them in her left arm. She then starts to turn towards Mike and you can see that her hands are apart. When the camera changes to a different angle however, her hands are together during the turn towards Mike. (00:10:00)
Visible crew/equipment: When Molly is talking to Joyce about the past boyfriends, stage lights are reflected in Joyce's wine glass. (00:14:00)
Continuity mistake: When Carl is making the elephant trunk joke, he has his beer up by his right ear. When the camera changes to a different view, his beer is now down on his chest. (00:15:30)
Continuity mistake: When Vince is on his knee with ring held out to Joyce, he's holding it with one or two hands depending on the shot used. (00:17:25)
Continuity mistake: Molly asks Mike if he was serious about the whole burial thing. When she does, Mike is holding the bottom of his cup of tea. When the shot changes, he's no longer holding the bottom of the mug. (00:05:00)
Joyce & Vince and Peaches & Herb - S1-E17
Continuity mistake: At the start, Molly gives Mike a few friendly slaps on the shoulder. She does this with her right hand but as the shot changes she is now using her left hand. (00:01:20)
Mike's Feet - S1-E18
Continuity mistake: When Victoria is saying she dated a mall cop, her right-hand goes from loose and limp and pointed downward to pointing up between shots. (00:11:10)
Peggy Shaves Her Legs - S1-E19
Continuity mistake: Peggy says to Molly she needs some advice. When she does so, Molly has nothing in her hands. When the shot changes her sandwich is back in her hands. (00:05:20)
Peggy Shaves Her Legs - S1-E19
Continuity mistake: When talking to Peggy at the school, Molly says a girl can't be too careful. When she does, Peggy has her drink in her hand which changes to a sandwich when the camera changes. (00:06:40)
Peggy Shaves Her Legs - S1-E19
Continuity mistake: Peggy says she sleeps with a gun under her pillow, and she has her sandwich in one hand. When the shot changes it's in two hands. (00:07:00)
Opening Day - S1-E20
Continuity mistake: When Mike and Carl enter the diner at the start Carl puts his hat down on the table. However, in the next shot, the hat has rotated. Note the badge on the front. (00:01:50)
Continuity mistake: In the car Sam asks Mike if the impression he did was supposed to be him. When he does, he's pointing at Mike, When the shot changes his hand is lowered. (00:08:10)
Continuity mistake: At the very start when Mike is listing all the benefits of egg yolks, his fork is on his plate in one shot and in the air in the next. (00:00:10)
Continuity mistake: When Mike is putting the DVD of The Godfather on, Molly grabs a crisp and removes her hand from the bowl. Camera cuts and she removes her hand again. (00:02:30)
Continuity mistake: When Mike is talking to Victoria in the bedroom, the position of the spoon in Victoria's sundae keeps changing between shots from stood up, to lay down to in her hand. (00:10:10)
Continuity mistake: When Joyce is saying about loosing Victoria as a baby, Vince goes from looking at Mike to Joyce instantly.
Continuity mistake: When Molly is in the cafeteria with Peggy and Molly is eating Jello, Molly has a fork but in the next shot she's using a spoon.
Continuity mistake: In this episode Molly buys Mike a car but they end up returning it. However, in later episodes, they're seen driving it - it's even the "baby" Mike has to let go of (after going to the psychic).