Aspects of crime scene cleaner Marty Gleason - including adopting a southern accent when conducting business - are based on real-life crime scene cleaner Neal Smither.
Three of the couples involved in the wife swapping party were the Keatons, the Cunninghams, and the Bradys. They were presumably named after the happily (and monogamous) married couples in the 1970s-1980s era situation comedies Family Ties (Steven and Elyse Keaton), Happy Days (Howard and Marion Cunningham), and the Brady Bunch (Mike and Carol) Brady.
Dina Meyer had previously worked with Paul Guilfoyle on Secret Agent Man (2000) and with Robert David Hall in Starship Troopers (1997).