9. Norm and Cliff, 'Cheers'
"Norm!" "It's a little-known fact …" Played by George Wendt, Norm Peterson was an alcohol-soaked accountant perpetually avoiding his unseen wife Vera; actor John Ratzenberger's Cliff Clavin was a know-it-all mama's-boy postal worker. But even as Sam and Diane stole the spotlight, these two served as a sort of Greek chorus at the corner of Cheers' titular bar, dispensing demented wisdom from half-drained mugs of beer. They proved that deeply flawed people deserved a seat at the Must-See-TV table.