Jonathan Gregory Brandis (Apr 13, 1976 – Nov 12, 2003) - an American actor, director & screenwriter. As a child model, he moved on to acting in commercials & subsequently won tv & film roles. At 17, he landed his best-known role, as Lucas Wolenczak, a teen prodigy on the NBC series seaQuest DSV. In November 2003, Brandis died of injuries he sustained after hanging himself at the age of 27.
Michael Landon (10/31/36 - 7/1/91) American actor, writer, director, and producer. He is best known for his roles as Little Joe Cartwright in Bonanza, Charles Ingalls in Little House on the Prairie, and Jonathan Smith in Highway to Heaven.