Ok, perhaps the last one was too easy :) Here's one that a friend of mine uses, and I'd love to know if it's something he coined, or is it a more common expression than I think:
Hot diggity-dag-dong-ding ... sh*t fire and save matches.
Given the southern twang that he uses when he says it, I would imagine this is a southern U.S. saying. Any takers on this one?