>UNAUTHORIZED BIOGRAPHY This two-hour, decidedly critical documentary includes interviews with former top Nixon aides but none with the 37th President. (Syndicated, Wed., March 8, 8 P.M.)

HOW HITLER LOST THE WAR This gripping 90-minute analysis focuses on the F├╝hrer and his enormous lapses in military judgment. (PBS, Mon., March 13, 9 P.M.)