Howard gets jealous when Ellen's ex comes to town with the intention of winning her back.
Did You Know?
The episode's title's based upon the line; "Old Mackie's Back in Town", from the song "Mack the Knife" (by Kurt Weill with lyrics by Bertolt Brecht, for the 1928 German musical 'Three Penny Opera'). See more
The show starts out with them complaining about the heat because the A/C was out, yet they are wearing sweaters later in the show and when they leave at the end,everyone grabs a heavy coat. See more
Howard, I want to tell you something but I don't want you getting all jealous.
You don't have to worry about that anymore. I don't have a jealous bone in my whole body.
Dr. Robert 'Bob' Hartley
I'm surprised you can walk.