It gets better with each season.

Season 3 will open like a 2 hour movie(2 episodes worth). With music specially written for the 2 eps. New openning! (I believe) Everyone has changed so it's just amazing to see whats happened 1 year later after Baltar becomes president of the colonies

Season 2 was awesome, but 3 will be just sick. They get more and more screwed each season and you really get that feeling of dred and passion for survival just watching from ep to ep.

BSG is like no other tv show in existance... it's like you are watching real life people (the are not perfect and have a ton of flaws and different ideals) only it's obviously fiction, but you can really relate with the characters. Kind of the same way you can with another show called 'Lost'.

Anyone who checks it out will not be disappointed. Even it's most hatful fans are turned by watching it. BUT start with the Miniseries if you can. It's best watched that way.

If anything at least start from Season 1. Any other season you'll be wondering whats going on for a bit.