All-GPL Distro from FSF?

I'm curious. Are there any all-GPL distros out there? The GNU site recommends blag as a distro (saying its all free software), but its not clear if its all GPL (but, I think, when I did the install, they did throw up the GPL screen before commencing so perhaps it is). But, my experience on a Dell 4150 wasn't great. I'll post that later. So, a quick question. Why doesn't the FSF come out with a distro? It would be a huge hit (though I suspect the answer to my question is that it would be a distraction for them, and they just don't have the manpower or funds to support it).