Russell T. Davies and Vince Gilligan discuss the "brother/sister" trope and how to get around it in TV writing.
Curry Barker asks Bill Hader a question in an interview with the New York Film Academy in 2019.
In a 22 minute interview for the release of The World's End, Peter Jackson cannot stop saying the word "yeah" constantly. This was in the middle of The Hobbit trilogy when he had very little sleep and was stressed out of his mind.
Lola FX created a small part in her hair just for the sake of continuity. Something nobody would ever notice. Taken from David Fincher's director's commentary track.
I think it is a case of parallel thinking rather than ripping off jokes.