Christopher William D'Elia is an American stand-up comedian, actor, writer, and podcast host. He is known for playing Alex Miller on the NBC…Christopher William D'Elia is an American stand-up comedian, actor, writer, and podcast host. He is known for playing Alex Miller on the NBC sitcom Whitney, Danny Burton on the NBC sitcom Undateable, and Kenny on the ABC television series The Good Doctor. In 2019 he appeared as Henderson in the Netflix thriller series You.