Now, I'll freely admit that I haven't done anything like a complex, comprehensive search of SF blogs or anything, but really, I've hardly seen any discussion about it. You'd think it would cause at least a bit of buzz: major network launches a hard-SF show with a good design sense, great effects, reasonable lip service paid to real science... it's more than a bit unique. But the world's SF blogs don't go nuts... they goes to sleep.
I understand that it might not be everybody's cup of tea, but, really, when's the last time you even heard of a weekly hard SF show? (Cosmos doesn't count.) No warp drives, no bumpy-headed aliens, just honest-to-goodness zero-g crisis management? I don't know that there's ever been another show like this (barring the BBC miniseries that inspired it, of course), and SF fans seem to be greeting the news with a barely-stifled yawn.
In short: if you haven't watched Defying Gravity yet, give it a chance. If you're the cynical type, take a deep breath, accept that an unsatisfying explanation for why they appear to have gravity is better than no explanation at all, and give it two chances. The premiere is on Hulu through September 7th, and new episodes air at 10 PM on ABC. Yeah, I know, it's up against Mad Men, but that's all the more reason that SF fans should rally around it in its struggle for ratings. Defying Gravity doesn't deserve the kind of dismissal that it's gotten from io9 (whose scornful review is exactly the kind of thing that drives flawed but promising shows to early graves). And it certainly doesn't deserve the general cold shoulder it seems to be getting from SF fans. So come on, guys, watch the darned thing! (I'll even make it easy on you: the first episode is embedded below.)
Oh, and read my review at Religion Dispatches here.