It's interesting that Crocodile Dundee doesn't actually use the "That's not X, this is X" pairing [Dundee says "That" not "This" both times] but that's what we end up remembering and what imitators do to reference that line.

This one isn't on Wikipedia's list (at time of writing) unlike "Play it, Sam. Play 'As Time Goes By'" or "Why don't you come up sometime and see me?"