Michael John McKean (born October 17, 1947) is an American actor, comedian, screenwriter, composer, singer, and musician known for various roles in film and television such as Lenny Kosnowski in Laverne & Shirley, David St. Hubbins in This Is Spinal Tap, and Chuck McGill on Better Call Saul. McKean's breakout role was annoying neighbor Lenny Kosnowski on the sitcom Laverne & Shirley. He played David St. Hubbins, lead vocalist and co-lead guitarist of the fictional rock band Spinal Tap in This Is Spinal Tap and had roles in several Christopher Guest ensemble films. He co-wrote the song "A Mighty Wind" (for the Guest film A Mighty Wind), for which he won a Grammy Award, as well as "A Kiss at the End of the Rainbow" from the same film, which was nominated for the Academy Award for Best O... ()