I just saw Episode 15 again and thought the way Iroh was acting towards Jun kinda of reminded you of the way Master Roshi act towards girls. Roshi is obviously perverted. And then he gets serious when it comes to battles. Samething with Iroh.
Perfect example when Zuko told him "Uncle.....i didn't see you get hit with the touge". And Iroh goes "Shhhhhhhh..."
See what i mean?
Doesn't he remind you of Master Roshi?