Blue on Blue - S1-E5
Continuity mistake: At the end of Outbreak, Big Jim finds Angie down in the bunker. Water is flooded everywhere (knee-deep), and Jim has on an orange buttoned long sleeve shirt. When this episode starts, at 2:15 the water is practically gone, and Big Jim is in a blue short-sleeved polo shirt. (00:02:15 - 00:40:15)
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Suggested correction: Jim shuts the door when he discovers Angie, then he comes back the following day and that's why his shirt is different.
Other mistake: When Norman and Madeleine are talking outside the Motel about Sam, the left side of the screen appears to be split down the middle after Norman says "Because you know it's safe to tell me", causing a weird effect on the chair that Madeleine is sitting in.