I never saw the original series of BSG... but this new series is HOT!!! its dark, gritty and you feel their pain... there is a two-hour miniseries (pilot) before season one if you guys wanna make up your minds. right now episode 11 of season two just aired (out of 20).. and season 3 (20 eps) have been greenlighted.

so things to look for : the Miniseries (awesome, special effects are nearly movie grade although the scenes where the ships launch seem like they are reused... but they stopped doing that now)
first episode of the first season (its called 33)... INTENSE... like really really intense (i think even better than the miniseries)... then it goes down a little bit for a couple of eps, then picks up until the finale (season one is 11 eps)...

Season two is good throughout

just watch it!