In addition to the rib-tickling disparity between onscreen episode titles and narrated titles, and "special guest stars" (including William Shatner, Robert Goulet, Lorne Greene, and others) who get killed in the opening credits, loyal viewers could count on a weekly dose of hilarity from Nielsen, North, and their supporting players. Character actor William Duell appeared each week as shoeshine boy "Johnny the Snitch," capable of answering literally any question if you repeatedly greased his palm (a gag that led to info-seeking cameo appearances by Dick Clark, Dr. Joyce Brothers, baseball manager Tommy Lasorda, and others). And while original Mission: Impossible costar Peter Lupus poked fun at himself as the dim-witted Det. Norberg (later played by O.J. Simpson in the Naked Gun movies), Ed Williams--an actual high school science teacher--is hilarious as "Mr. Wizard"-like lab technician Ted Olson, who dispenses dubious science lessons to unsuspecting children. The fast-paced barrage of humour guaranteed that every episode would deliver as many hits as misses, and while some of the jokes have lost their punch, Police Squad! still delivers the belly-laughs... and always will, as long as humans have an appetite for shameless stupidity. --Jeff Shannon