Kirk Thomas Cameron ( born October 12 , 1970 ) is an American actor best-known for playing `` Mike Seaver '' on the television situation comedy , Growing Pains , and in other television shows and movies . Kirk Thomas Cameron ( born October 12 , 1970 ) is an American actor best-known for his role as Mike Seaver on the television situation comedy Growing Pains ( 1985 â `` 1992 ) , as well as several other television and film appearances as a child actor .