Adam met his wife in Hawaii when he was shooting To End All Wars (2001) with her stepfather, Kiefer Sutherland.
Adam is a son-in-law of Terry Kath.
Adam appeared in the film Van Wilder 2: The Rise of Taj as Lord Wrightwood.
Adam and his wife Michelle Kath had a son, Hamish, in February 2005.
His mother-in-law is Kiefer Sutherland's first wife, Camelia Kath.