By todays standards it might look naive but this was a groundbraking series at it's time. If you only know the remake take the time to watch this. It's worth it.
Whatever you do, do NOT watch the movies (Specials). They are basically put together from parts of the series.
The first is a shortened Version of the three-part "Saga of a Star World" which starts the show. The second is made of parts from "The Living Legend" and "Fire in Space" which are put together rather clumsy and in a different order, in the end telling a different story through large parts.
review in brazilian portuguese: http://bloge2014.blogspot.com.br/2014/04/reviewbattlestargalactica1978.html
Where is the movie on trakt? tt007721