If you click on the “Connections” link on an episode IMDb page, you might find some nice movie references others have caught.
E.g., for The Glasses S05E03, George does the same “spot a dime” bit that was used by Donald Pleasance in The Great Escape.
In The Bris S05E05, in addition to all the Godfather references, there’s also the Pig Man/hospital thing which references the Malcolm McDowell film O Lucky Man!