Unassuming, stage-trained performer who made his film acting debut in "The Boys in Company C" (1978--he also contributed a song), was featured in the fine adaptation of Peter Straub's "Ghost Story" (1981) and was widely seen as the voyeur-in-over-his-head in Brian De Palma's lurid thriller "Body Double" (1984). Craig Wasson has been combining an acting career with his music since the outset of his professional endeavors. He toured the U.S. in the musical "Godspell" from 1973-74, and made his Broadway debut playing the harmonica and singing in "All God's Chillun Got Wings" (1975), and also