I was going to get the Sci-Fi BSG set, until I heard of an ever better main release coming out later, and decided that patience was a virtue.
I have several friends who want to watch BSG, after hearing great buzz about it, but didn't want to jump midway into a series without catching up, so they're all waiting for the DVD release to watch the first season and miniseries before watching the new Sci-Fi releases.
As for S:AAB, I watched it regularly back in High School, it was certainly interesting, although even at the time I had trouble swallowing some of the basic conceits of the setting (space-opera starships & starfighters by the 2060's?) and the plots of some of the episodes (for ace starfighter pilots, they sure spend a lot of time as grunts on routine infantry missions, I know the USMC is all about the "every marine is a rifleman", but I'm pretty sure that entire squadrons of ace pilots aren't regularly pulled off the flight line to march alongside other marines instead of flying), or the plots of some episodes ("The Angriest Angel", where an alien superfighter defeats entire squadrons singlehandedly, the latest in human technology can't stop it, so their CO goes back to flying despite severe disorientation which lost him his flight status in the first place, and with vastly inferior technology and severe disorientation singlehandedly defeats this super-ace where entire wings failed before).
Cool series, but it had it's problems.
Interesting that S:AAB and BSG get mentioned in the same thread, since the lore as I understand it is that S:AAB only existed because a failed BSG revival in the 90's.
There was a movement to get FOX to pick up BSG in the mid 90's as a revival, and while FOX execs were warm to the idea of a space action type show with starfighters and such, they didn't know if BSG had enough of a fan base to make it worth the licensing and baggage it would bring along. The BSG movement invited FOX Execs to the 15 Yahren Reunion in 1993, to show them the size of BSG fandom. The turnout was lower than expected (although there were accusations that the hotel intentionally interfered with the convention by turning away congoers and cancelling reservations, since an executive from the hotel chain was having a wedding reception at the hotel and may not have wanted a bunch of geeks around). FOX decided not to buy BSG because of the low turnout, and instead developed their own space opera series: Space: Above and Beyond.