Greater Gift" (1985) and "The Drug Knot" (1986), and TV-movie Lone Star Kid (1986). He has gone on to direct many episodes for a variety of television series, including The Pretender, Beverly Hills, 90210, Melrose Place, seaQuest 2032, Star Trek: Deep Space Nine, Star Trek: Voyager, Xena: Warrior Princess, Hercules: The Legendary Journeys, The Secret Life of the American Teenager, Sabrina the Teenage Witch and Charmed. He also directed several episodes of the TV series 7th Heaven. Despite his success as a director and producer, Williams has occasionally returned to his work on Happy Days in retrospective ways. He played himself in a 1996 Happy Days-themed Boy Meets World episode (which also featured former castmates Tom Bosley and Pat Morita). While directing a 2003 episode of Sabrina the Teenage Witch titled "Sabrina in Wonderland", he appeared as Potsie in a fantasy sequence. He also joined his fellow Happy Days cast members for two reunion specials: The Happy Days Reunion Special (1992) and Happy Days: 30th Anniversary Reunion (2005). Williams initially objected to footage of Potsie appearing in Weezer's 1994 music video Buddy Holly, which was set in Arnold's Drive-In from Happy Days, but he later relented. Williams is also a businessman. In 1987, fellow Happy Days cast member Al Molinaro and he opened a chain of diners called Big Al's; the business went defunct. He founded Starmaker Products, a cosmetics company, and was a featured speaker at the U.S. Patent and Trademark Office's National Trademark Expo in April 2008, at which he talked about the importance of registered trademarks for small businesses (and signed autographs for Happy Days fans). Williams is the author of Singing to a Bulldog: From Happy Days to Hollywood Director, and the Unlikely Mentor Who Got Me There. Happy Days lawsuit On April 19, 2011, Williams and four of his Happy Days co-stars, Erin Moran, Don Most, Marion Ross and the estate of Tom Bosley, who died in 2010, filed a $10 million breach-of-contract lawsuit against CBS, which owns the show, claiming they had not been paid for merchandising revenues owed under their contracts. The cast members claimed they had not received revenues from show-related items, including comic books, T-shirts, scrapbooks, trading cards, games, lunch boxes, dolls, toy cars, magnets, greeting cards, and DVDs, where their images appear on the box covers. Under their contracts, they were supposed to be paid 5% from the net proceeds