Colorado-born Juli Ashton has the reputation of being a nice girl in a not-always-so-nice business. She graduated from Colorado State University with a degree in Spanish and History, working as a nightclub waitress to put herself through college. She taught Spanish in a junior high school for a year, but her striking looks and spectacular figure weren't meant to be cooped up in a classroom, and in 1990 she began appearing in adult films. She has also had smaller roles in "mainstream" films, most notably in the Trey Parker/Matt Stone comedy Org…