 Director Russ Emanuel (qv) put various references from his  previous film _Girl With Gun (2006 short)_ (qv) into "P.J."  including: the mention of Nightingale (a horse mentioned by the Burt  character in "P.J.", the main characters name in "Girl With Gun"),  the actress Tracy OConnor (playing the Nurse on Intercom in "P.J.",  who was the Nightingale in "Girl With Gun"), and the mention of a  Dr. Peterson in "P.J." (also a name mentioned in "Girl With Gun").  Furthermore, Emanuel cast Dina Kriger to play the role of Claire in  "P.J." (she was also Lucy in "Girl With Gun").