This episode's headline: Attacking Heart Attacks; Crop Coverage; Profile; Conversation. The guests include DR. CHARLES HENNEKENS, Brigham and Women's Hospital; MARY KAY THATCHER, American Farm Bureau Federation; JOHNMARSHALL, FCIC; REP. DAN GLICKMAN, [D] Kansas; DOUG MARLETTE, Political Cartoonist; JOHN CLEESE, British Actor; CORRESPONDENT: HODDING CARTER. Byline: In New York: ROBERT MacNeil; In Washington: JAMES LEHRER