Battle Beyond the Stars (1980)

This looks every inch the low budget affair it actually was - but it almost comes off as a fairly engaging sci-fi rip off of the "Magnificent Seven" - complete, even, with Robert Vaughn! "John-Boy" himself, Richard Thomas ("Shad") lives on one of those simple, peaceful, planets threatened by a megalomanic with a big laser cannon (John Saxon) who demands their harvest. "Shad" decides to try and rustle together some mercenaries to defend their home from this evil conqueror and so recruits a disparate band including George Peppard ("Cowboy") and a collection of inter-galactic misfits to help with their cause. Probably most notable for James Horner's score, this is an enjoyable enough sci-fi action adventure with plenty going on and not too much tedious philosophising; the special effects do their job fine, too.