Because of declining ratings producers knew the show was on the bubble and could possibly be canceled so they went to the studio executives and said they had two ideas for a season finale, one that wraps everything up, or the cliff hanger episode and the executives said to go for the cliff hanger ending. Several weeks later the show was canceled.
Apart from learning about a brother (s04e19), this episode reveals that Crabman has a sister named Pam.
Last show of the series.