Visitors to the recently opened Cheech Marin Center at the Riverside Art Museum are often astonished by the extensive collection of colorful, narrative art there by Carlos Almaraz, Judithe Hernández, Gilbert “Magú” Luján, Frank Romero, Patssi Valdez and other pioneering Chicano artists: work that has been gifted by Cheech Marin, actor of the Cheech and Chong movies, and avid collector of Chicano art.