The eclectic career of Cameron Crowe has encompassed a wide variety of occupations, including journalism, writing liner notes for albums and filmmaking. As a teenager, the California native began writing freelance pieces for such publications as Playboy and Creem. By age 16, Crowe was on the staff of Rolling Stone, profiling such artists as Bob Dylan, David Bowie, Neil Young and Kris Kristofferson. He made as "undercover" return to high school in 1979 to research a book on teen life. The result, "Fast Times at Ridgemont High", was optioned by Universal Studios before it hit the bookstores and