The musical number "Whatcha Gonna Do?" features music by series composer Christopher Lennertz and lyrics by David Zippel, who also wrote the lyrics for "Star Spangled Man" for Captain America: The First Avenger (2011). Although they had never worked together before, Lennertz and Zippel went to the same high school.
The dance sequence was choreographed by Louis van Amstel from Dancing with the Stars (2004). He brought in the following featured dancers from that show: Dmitry Chaplin, Damian Whitewood, Sasha Farber, Anna Trebunskaya and Karina Smirnoff.
First and only appearance of Peggy friend and roommate Angie in the second (and final) season, and even then, only in a dream sequence. Angie was a prominent supporting character in season 1. When season 2 transplanted Peggy's adventures from New York to Los Angeles, most of the supporting cast was ported over as well, save for Angie, who didn't even warrant a mention until the opening number here.
Robert Roldan, Malene Ostergaard and Serge Onik were featured dancers in So You Think You Can Dance (2005).