Mandy Patinkin shares a lengthy scene in the cab with Judd Hirsch. According to Tony Danza, Patinkin auditioned for the role of Alex that went to Hirsch.
At least four people in this episode had main or major recurring roles in crime shows: Judd Hirsch (Alex) played Alan Eppes in Numb3rs, Tony Danza (Tony) played Tony Caruso, Sr. in The Good Cop, Tom Selleck (Elaine's perfect passenger) played Thomas Magnum in Magnum P.I., Mandy Patinkin (Alan, the baby daddy) played Jason Gideon in Criminal Minds. Additionally, Marilu Henner had a main role in a series of crime-solving movies as Aida Teagarden in the Aurora Teagarden Mysteries. Ironically, all three actors who play main characters on this show played the parents of the main characters in the other mentioned shows/movies, while both guest stars played main characters in theirs.