Over the past 25 years, he's produced thousands of illustrations, cartoons, greeting cards, posters, book covers, logo designs, and articles for a myriad of publishers, advertising agencies, national magazines, books, design firms, city agencies, and others.

In addition to writing crosswords for The New York Times, he's also created puzzles for the Los Angeles Times, Wall Street Journal, Scientific American, People, Sports Illustrated, MAD, National Wildlife Federation, Crayola, Scholastic, the American Crossword Puzzle Tournament, the World Puzzle Championship, and many, many others. Two of his crosswords and an interview were included in the 2006 documentary Wordplay.

In his spare time, he's a bicycle road racer and writes animated screenplays.