The song Bailey and Ben hum in the elevator is "Ain't Nothing Like The Real Thing" by Marvin Gaye
Demi Lovato, who plays Haley May, the patient who was originally diagnosed with Paranoid Schizophrenia, suffers from mental illness. They were diagnosed with Bipolar Disorder in January of 2011.
Shiny Happy People is a song by R.E.M.
Emily Bergl and Marion Ross both appeared on the show Gilmore Girls