This is probably a dumb thing to consider as "best," but every time a Wurster character refers to his father as "daddy" makes me laugh.
Roy calling himself "daddy" when referring to some ill-advised promise that he made to his kids my favorite version of this.
I think it might be a teeny weeny bit funnier when Wurster goes formal w/"yes father", "no, father", "please don't, father",etc. If I remember right, Scharpling also does it in one of the DVD scenes, where he's talking on his cell while driving around in Philadelphia, I think ...