Near the end of the episode, Erik Schrody (aka "Everlast") has a cameo as Jake the bartender. Everlast's hit song "Saving Grace" is used as the show's theme song during opening credits.
Dorothy is the name of the woman who became trapped in her office following a massive tornado. Obviously this is an allusion to The Wizard of Oz (1939), in which a girl named Dorothy is transported to--and seemingly trapped in--the land of Oz by a freak tornado.