Pretty much the entire episode of "The Screenwriter", but especially the moment where the titular screenwriter wanders up to the Rampart admitting desk and starts talking into his microphone about the nurse, describing her as foxy and tough as nails. He wanders away and she asks the police officer who'd been standing at the desk if the man is a psych admit.
In a Running Gag within Season 2 Episode 19 titled "Boot", a lady tries to cook for her boyfriend Bob and his mother, but ends up with a disaster in preparing the dish. First call has Roy and John finding the lady with her hair caught in the meat grinder, the second has them not only trying to get her caught hand out of a mixer, but treating her other hand burned only seconds later after she reaches for a handle of a boiling pot. The third has John and Roy putting out a fire in the kitchen. The lady, defeated, hands them a note to give to Bob and his mom, which are directions to the restaurant down the street. The lady tells Roy and John that she's headed for the theater... and eating popcorn!
In the episode, "Inferno", nurse Dixie has her hand stuck inside of the coffee vending machine, and Dr. Early drops by as Roy and John are getting her out of the predicament. After Dixie is freed, Dr. Early puts his money into the machine, which works properly... that is, until the coffee machine hoses down his leg!