Helping HOMER study for the MCATs, BART expresses his admiration for his father. Later, brain-dead slob BARNEY GUMBLE, in his cushy job building monorail tracks, accidentally causes a crane to drop a MONORAIL car on a house while waving to HOMER. In bed, MARGE expresses her concern to HOMER about his desire to be a MONORAIL conductor. With Co-host Geoff Clarke and Guest Commentator Barm.