Personal favorite? I'd have to say "Rocky and Bullwinkle". But a soft spot remains for original "Pink Panther" cartoons and the lesser-known classic "Inspector" series. Charlie Brown cartoons are a must when chanel-surfing on cable television, as are "George of the Jungle" and the hard-to-find "Grimmy" cartoons occasionally found online.
Disney's classic cartoons are among the greatest -- what could be funnier than Donald Duck and the hapless bear "rug" trapped in a hunting cabin? Or Pluto and the much-hated sweater knitted by Minnie Mouse? Mickey Mouse cartoons (especially those featuring Donald Duck) are unforgettably funny regardless of age.
The best comes last, however -- Looney Tunes. When Bugs Bunny substitutes for the Road Runner, a genius moment in humor is born; as is the bittersweet humor that gives birth to the bulldog and homeless kitten cartoon, the "singing frog" episode that celebrates Warner Bros. classic symbol.
Red Green is great comedy; Fawlty Towers is unrivalled. But no humorous endeavor holds a candle to the cheesy cartoon show when one is feeling blue.