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Bill Griffith
William Henry Jackson Griffith (born January 20, 1944) is an American cartoonist who signs his work Bill Griffith and Griffy. He is best known for his surreal daily comic strip Zippy. The catchphrase "Are we having fun yet?" is credited to Griffith.Over his career, which started in the underground comix era, Griffith has worked with the industry's leading underground/alternative publishers, including Print Mint, Last Gasp, Rip Off Press, Kitchen Sink, and Fantagraphics Books. He co-edited the notable comics anthologies Arcade and Young Lust, and has contributed comics and illustrations to a variety of publications, including National Lampoon, High Times, The New Yorker, The Village Voice and The New York Times.
Source: Wikipedia