Fraiser's season five, episode three ode to Halloween in 1997 features the kind of classic miscommunication that sitcoms thrive off of. Roz is worried she might be pregnant, but Niles misinterprets part of a conversation he overhears and assumes Daphne is the one pregnant with Frasier's baby. This all takes place while everyone is dressed as literary characters, by the way (including a hilarious Cyrano de Bergerac costume and Roz's sultry take on The Story of O).