He often plays tormented/troubled characters such as in Witte waan, de, as a deadseaking junkie (1984) and Zoeken naar Eileen (1987) as a deasperatly in love, Avonden, de(1989) playing Frits van Egters. An often spoken phrase of Thom is "I have a dark look on human motives". His debut film is Luger (1982) under direction of Theo van Gogh. He played in more than twenty movies and tv-series. He calls himself "more a hard working man than a gifted actor" However he never had a breakthrough in international films. His second profession is that of a photorapher.