If you even remotely enjoy Sci-Fi, you owe it to yourself to watch this beginning to end at least once in your life. I had always scoffed at it because it was produced by the Syfy channel, but the production values are Hollywood or better. It's written, cast, acted and scored amazingly well. I've consumed a lot of fictional works in my time, across all medium and I'd go so far as to call this top 3, maybe number one on my list. If you have Netflix, you can watch all four seasons streaming, but you have to watch the miniseries first which is only available on disc. It's essentially the prologue to the story and very necessary to set the scene.
Do not watch the original Battlestar Galactica from the 80's.
START WITH THIS
THIS IS THE ONE FROM THE 80's AND PROBABLY SUCKS
Do not watch the original Battlestar Galactica from the 80's.