<Tr> <Td> </Td> <Td> This section needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (August 2017) (Learn how and when to remove this template message) </Td> </Tr> <P> Valentine got his start in show business on the stand up comedy stage . After an appearance at the Montreal Comedy Festival, he left his native New York for Los Angeles . There, he quickly landed spots on various talk shows including The Late Late Show with Craig Kilborn, Late Night with Conan O'Brien and The Tonight Show with Jay Leno . He has been headlining comedy clubs and theaters for the past fifteen years . </P> <P> He is best known for his role as Danny Heffernan on The King of Queens, playing the cousin of principal character Doug Heffernan (performed by his real life brother Kevin James) for nine seasons . Elsewhere on the small screen, he notably appeared on the television show Men of a Certain Age, which was written and directed by Ray Romano, and met with critical acclaim . Prior to his run on the series, he starred in his own half - hour special on Comedy Central along with hosting The X Show on FX . </P> <P> On the big screen, Valentine has appeared in Stuck on You and I Now Pronounce You Chuck and Larry . He also had a cameo in Jerry Seinfeld's documentary, Comedian . More recently, he makes occasional appearances as a round table comedian on the popular E! Network late - night talk show Chelsea Lately, and also takes part in the Dusty Peacock web series on Crackle . </P>

Who is doug's cousin on king of queens
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