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. he was the main actor in the "left behind" movie series and in "fireproof". he is also an active christian evangelist, and works with ray comfort on "the way of the master". he co-started "the firefly foundation" with his wife, actress chelsea noble.