Agreed with everyone that Bill with any kind of authority at all is always hilarious.
As for the main plot, I'm torn. I really like that they finally took an episode to have Hank realize that he really doesn't have any faith in his son at all (which has more or less been going on since... well, the show started), and I really liked the way it was handled up until the ending, and then the resolution kinda let me down a little. When Hank "rescued" Bobby from the baseball game, the conversation they had afterward seemed to only imply that Hank's lack of faith in his son was justified, which didn't sit right with me. I know Hank took a second to hesitatingly admit that Bobby is good at a few things, but I dunno. I guess that wasn't enough to make the resolution satisfying for me.
I guess I, like a lot of other fans, am just tired of the "Hank was right all along about everything" endings. I do think that the coach overdid it with the praise, but Hank really was in the wrong for doubting his son to such an extreme, so there must have been some happy medium between the praise and doubt to put Hank in at the ending instead of making his lack of faith being the "right thing."
But I'm likely over-analyzing it, and the rest of the episode was great, so I guess it balances out. I really am going to miss KotH when it's gone. FOX really needs an animated show grounded in realism to balance the other crazy shows in the Sunday lineup, so this'll be quite a loss.