iGregory

Death Has a Shadow - S1-E1

Revealing mistake: Peter's right eye overlaps his nose when Lois reminds him about getting drunk off communion wine at church. This mistake was later referenced in "Back to the Pilot." (00:02:50)

Nikolai

Death Has a Shadow - S1-E1

Continuity mistake: When Lois, Meg, Chris and Stewie first enter the courtroom there is a brown-shirted man sitting next to Quagmire. In the next shot, there is a pink-shirted man there. (00:18:25)

Blibbetyblip

Death Has a Shadow - S1-E1

Continuity mistake: When Peter says he's gonna buy his family the biggest meal they've ever had, Stewie's eyes are drastically bigger than usual. (00:13:15)

Blibbetyblip

Death Has a Shadow - S1-E1

Continuity mistake: Stewie tries to get his mind control device back from the kitchen. The cupboard door is open when he falls. In the very next shot, Lois turns the light on in the kitchen, and we see the door has closed without anyone touching it. It is open again after that. (00:09:50)

The Loobenfeld Decay - S1-E10

Continuity mistake: When Penny is telling Howard and Raj about Sheldon's "drug addicted cousin" her scarf keeps jumping in and out of her jacket.

Hamster ★

Pilot - S1-E1

Continuity mistake: Leonard walks into the doctors at the start and has a piece of paper in just his right hand. Camera cuts to a long shot and now he is holding the paper with both hands. (00:00:25)

Ssiscool ★

Pilot - S1-E1

Visible crew/equipment: When Leonard, Sheldon and Penny are eating lunch for the first time, Penny sits on Sheldon's spot, Leonard then tells him to "Just sit somewhere else." He then walks over to his desk chair and contemplates sitting there and in the bottom left of the shot there is a chair with 4 false legs, and one large leg running down the middle. (00:08:20)