Doug's Servitude / Doug Rocks the House - S3-E2
Continuity mistake: Doug Rocks the House: When Roger and his friends are throwing rocks at the house, there is a purple book in front of Roger, and two other books next to his friends. In the next shot, the purple book moves to the side of Roger, and it changes to yellow. A few shots later, it changes to orange. Then when Doug throws a rock at the house, the other two books change position, then disappear a few shots later. (00:11:58 - 00:14:11)
Doug's Servitude / Doug Rocks the House - S3-E2
Other mistake: Doug Rocks the House: When Doug tries to talk to Patti at her locker, after he gives the rock and marker back to the kid beside him, the kid's glasses lose their colour for one frame. (00:18:00)
Doug's Servitude / Doug Rocks the House - S3-E2
Continuity mistake: Doug Rocks the House: When Doug tries to talk to Patti at her locker, he gives the rock and marker back to the kid beside him, then turns to look at Patti. When the shot changes, his eyes are suddenly closed. (00:18:01)
Doug's Servitude / Doug Rocks the House - S3-E2
Continuity mistake: Doug is building a house out of playing cards at the end. He has a deck next to him he's using. When porkchop destroys the house, the deck of cards disappears.