One of my favorites would be the scene in Power of Three where he and Amy are sitting on a ledge and he's explaining that he's not running away from things, but actually running towards
them, because there's so much to see and he wants to see it all before it fades away. Just thought that was a really great and interesting new insight into his character.
Also loved these lines:
"Has anyone ever told you that you're a bit weird?"
"They never really stop."
"I speak Horse. His name's Susan. And he wants you to respect his life choices."