Game Career Guide has an interview with some writers who work in the games industry. Hurrah for the liberal arts!
I already knew in high school I wanted to work in entertainment, so I attended some special workshops called the Media Workshops in Hollywood. There I was advised to major in whatever I wanted in college because I would learn everything I needed to know my first six months in entertainment. Taking this advice to heart, I chose to major in Archaeology.
While I continued to study programming and art in college, auditing a class in C and taking more art history classes, the archaeology emphasis has had the greatest influence on me. Combining soft knowledge like art, history, and mythology spanning the globe, with hard knowledge like biology, statistical analysis, economics, and urban planning has helped me the most in my game career.