>SGT. PEPPER: IT WAS TWENTY YEARS AGO TODAY This two-hour-long rebroadcast takes a look at the Beatles' most influential album, Sgt. Pepper's Lonely Hearts Club Band. PBS, Fri., Aug. 19, 9 p.m. ET.

DRESS GRAY If you missed it the first time, now you can catch this seering drama about the cover-up of a murder in a prestigious military academy. Hal Holbrook and Alec (Beetlejuice) Baldwin star, Screenplay by Gore Vidal. Part 1: NBC, Sun., Aug. 21, 9 p.m. ET; Part 2: Aug. 22, 9 p.m. ET.

BLACKADDER II The journey continues...This outrageous, Monty Python-esque reworking of English history stars British comedian Rowan Atkinson as the imaginary Edmund the Black Adder. Part 1 was set during the reign of the infamous Richard III, Part 2 takes place in the court of Elizabeth I. Atkinson plays a wisecracking courtier. The half-hour, five-part A&E series begins Sun., Aug. 21, 11 p.m. ET.