Sunset Blvd.
Sunset Blvd. mistake picture

Continuity mistake: When Joe awakens after his first night at Norma's mansion, his shirt is un-tucked as he puts on his jacket to go outside. When he is running down the stairs in the next shot, his shirt is tucked in. (00:26:35)

Continuity mistake: Gillis is lying on his bed with the script pages all over the bed. Look closely and you'll see that they're all copies of the same page.

Sacha

More mistakes in Sunset Blvd.

Joe Gillis: You're Norma Desmond. You used to be in silent pictures. You used to be big.
Norma Desmond: I am big! It's the pictures that got small.