First appearance of Brian's girlfriend, Jillian.
When Jillian calls Brian on his phone to get instructions on how to operate the DVD player, his ring-tone plays a midi version of "Axel F" by Harold Faltermeyer.
The license plate on Brian's Toyota Prius reads "Bri-Dog"
First appearance of Buzz Killington.
The title is based on the song "Whistle While You Work" from the 1937 Walt Disney movie Snow White and the Seven Dwarfs (1937).