If you like "Battlestar Galactica", you will love this movie, at least if you can sit through the incredibly cheesy and silly title sequence. Based extraordinarily loosely on the classic early 1900's sci-fi novel, this is a story of an American astronaut frozen in crygenic sleep for a deep-space exploration mission in the late 20th Century who returns home and awakens in the post-nuclear 25th century. He finds an Earth ravaged by nuclear war (the scene in bombed-out Chicago is particularly amusing to me, as a life-long Chicago native, even if the sets look NOTHING like State Street)but with survivors carrying on in underground cities.
Earth is about to be atacked by the evil Draconians, led by a lovely but devious Princess. Sort of an S&M version of Princess Leia. Anyway, the Draconians pretend to offer Earth help defeating some "Space Pirates", but the Pirates are really Draconian fighters.
What follows are some classic space battle scenes, a lot of running around in dark spaceship corridors, and a classic love triangle between Buck Rogers, the Evil Princess, and a female fighter pilot from Earth. Buck Rogers manages to sabotage and destroy the Draconian fighters and saves the day, of course.
Along the way, we get some amusing dialogue, and some VERY 1970's sci-fi scenes, including Buck Rogers introducing Disco music to the future. The sight of his robot Sidekick, Twiky, dancing to Disco music well saying "Get Down!" still haunts me today.
However, the babes are hot, the battles exciting, the effects good (for 1970's TV), and the story easy to follow. I like it, and wish I could find a copy. I haven't seen it in years.