"here here" gets me.
Why does that get you? And how do you feel about cheers? or oorah? Or huah?
Because it's "hear, hear." As in, "hear what this gentleman has just said!" Not "come here, dog."
I've always been under the impression it's "hear, here", like "Hear what this person here has to say!"
Or it's just one of those things that doesn't translate well from spoken to written.