First appearance of the maid, Consuela.
After Joe gets his legs back, he hooks up with three new friends. One of them is named Parker, who is Peter's opposite. Combined, the names make Peter Parker, aka Spider-Man who showed up earlier in the episode.
Throughout the series, references have been made to the fact that some characters voices sound similar due to them being voiced by the same person. In season six, episode four, "Believe It or Not, Joe's Walking on Air", Peter tells Dr. Hartman that his voice sounds similar to Carter Pewterschmidt (both voiced by Seth MacFarlane). In season fourteen, episode three, "Guy, Robot", Carl does an impression of Archer from the television series Archer (2009), and Bob from the television series Bob's Burgers (2011), who are all voiced by the same person, H. Jon Benjamin.
First episode where Joe walks.