Barnett, commonly known by his nickname Barney, is also recognised for his television appearances on Australian television, Network Nine’s 1 vs. 100 in 2007 and Network Ten’s eighth series of Australia’s Big Brother reality television show in 2008.
In 2008, Murphy appeared as celebrity judge on Danny Bonaduce's I Know My Kid's a Star reality show contest for young actors and with Bob Saget on 1 vs. 100.
On February 9, 2007, Larry was the $250,000 winner of the Last Man Standing edition of 1 vs. 100, defeating, among others, Ken Jennings, Annie Duke, Brad Rutter, Kevin Olmstead and Nancy Christy.
Billboard Hot 100 | ''Billboard'' Hot 100 | 100 metres | Canada's Top 100 Employers | A History of the World in 100 Objects | The WB 100+ Station Group | 1 vs. 100 | 100 | 100 Huntley Street | Pennsylvania Route 100 | Fokker 100 | 100 Bullets | Triple J Hottest 100 | New Zealand's Top 100 History Makers | Committee of 100 | Time 100 | The World's 100 Most Powerful Women | The WB 100+ | Single Top 100 | MR-UR-100 Sotka | DB Class V 100 | Canadian Hot 100 | Wilt Chamberlain's 100-point game | Triple J Hottest 100, 2010 | Triple J Hottest 100, 1997 | Tennessee State Route 100 | Maine State Route 100 | Lockheed L-100 Hercules | Kodak DCS 100 | Forbes Magazine's List of The World's 100 Most Powerful Women |
In September 2006, Chapman appeared with Cristina Nardozzi (Miss Massachusetts USA 2005), Jennifer Fairbank (Miss Hawaii USA 2005), Berset, Tamiko Nash (Miss California USA 2006), Angelique Breux (Miss California USA 1999) and Lindsay Douglas (Miss Kansas USA 2002) on NBC game show 1 vs. 100.
1 vs. 100 (1 대 100, South Korean version of Endemol game show with a top prize of ₩50,000,000; uses the 2006-07 United States format.)
In August 2010, representing Israel at the 2010 Summer Youth Olympics, he won the silver medal in the Boys' 100-meter backstroke, finishing a tenth of a second behind the gold medalist at 55.28 seconds.