Great answer,Mabel and Dipper are really sweet to each other. I always love the little grin Mabel gives Dipper in the opening credits when they're looking around at all of Grunkle Stan's stuff.

No,I think it was Nick DiPaolo (sp?)

You're right, but it was her hand signing the divorce papers in an early s1 episode.

…or 5-6 episodes ago, even.

That howl he does towards the end gives me chills every time. Apparently that really is David Byrne's mother giving them all drinks at the end, too. It's so cute that she kind of dances like him as she walks in.