I just got done watching this episode (some kind soul has posted a download link on the episodes on computer thread), an interesting premise and several good gags make for another 22 minuets of goodness.
Spoiler Below Yeah, the Madam Foster/60's Batman show parody was the highlight of the episode by a landslide, I thought Mr. Herriman's reactions to being forced to play along with the whole absurd ritual totally put it over the top. And now Mac has yet another hero sidekick gig to put on his resume.