Jonathan Frakes was a guest star in Episode 5. He appeared onscreen in only the first two minutes and the final minute of the episode. His wife Genie Francis had a cameo at the end of Episode 3 and appeared in only the final minute of that episode.
Christine Baranski (Maryanne) & Stephen Root (Phil Asher) also worked together on two episodes of The Good Wife (2009) as Diane Lockhart & Judge Murphy Wicks respectively.