Ronald Brian Underwood (born November 6, 1953) is an American film and television director, known for directing such films as Tremors (1990), City Slickers (1991), Heart and Souls (1993), and Mighty Joe Young (1998). Early life. Underwood was born November 6, 1953, in Glendale, California. In school he lived in Ceylon, now Sri Lanka, as an AFS Intercultural Programs exchange student. https://en.wikipedia.org/wiki/Ron_Underwood