Jack: Her name is Bobbi Stokowski, she's the wife of a farmer from Tulsa, Oklahoma. Picked up in recent years on drug charges.
Joanne: Who are you? Columbo?
Joanne is referring to the lead detective, Lieutentant Columbo, of the long-running television show, Columbo. Although coming across as a seemingly hopeless, fumbling Detective, Lieutenant Columbo had an uncanny ability to learn minor details about a suspect.