Lou Diamond Phillips (b. 1962) is an actor who has appeared in movies such as La Bamba, Stand and Deliver and Young Guns.
He appeared on Sesame Street in a segment where he teaches Snuffy how to write his name, and gives Gina a Snuffleupagus-sized autograph (EKA: Episode 3111). In another segment (EKA: Episode 2709), Big Bird lets him sleep in his nest. He also appears in the celebrity version of "Monster in the Mirror".