Sheed's 7 - 10 feet fadeaway is just not up there in my book as truly unstoppable.
Well I mean...its completely unblockable, and he usually made it. He had a super-high release and a pretty deft touch. It wasn't really much of a fade-away, it was more like the way Big-Z shoots J's..he didn't even need to jump much.
http://www.youtube.com/watch?v=rnAVALhIAIc
It is a tough shot to block let alone disrupt, but I have seen Perk block it a few times.
The league is lacking good post defenders with good timing.