Taxi

Louie De Palma (Danny DeVito) - The head dispatcher for the Sunshine Cab Company, Louie spends the bulk of his time holding court inside the caged-in dispatch office at the garage and trading insults with the drivers. He not only has no morals to speak of, he positively revels in his misdeeds. Nothing is beneath him, from taking advantage of a drunken friend of his sometime-girlfriend Zena Sherman (played by DeVito's real-life wife Rhea Perlman) to gambling with a young boy to stealing from the company. He lives with his mother (DeVito's real mother, Julia, in two episodes). He has (on very rare occasions) helped his workers, as in the episode in which an arrogant hairstylist (played by Ted Danson) gives Elaine a garish makeover just before a very important event and further humiliates her by stating he "didn't know how to do taxi drivers". It is Louie who bolsters her confidence to confront him. TV Guide ranked De Palma first on its list of the 50 greatest TV characters of all time.