 In Season 13, he judged a contest held in his then closed restaurant Fleur de Lys in San Francisco.In 2008 he was invited in the First Annual Food and Wine Exhibition in Monterey, California, and returned again in the 2nd Annual Exhibition in 2009


Keller is also an avid DJ, frequently performing at food-related events.His friend, San-Francisco-based DJ "Frenchy le Freak", taught him the skills in exchange for cooking instruction.