Kevin Drum at Washington Monthly considers the very worst (US) blog posts ever

This has got to come close. It's John "Hindrocket' Hinderaker from Powerline (no relation)  on  July 28th 2005, blogging about George W. Bush:

It must be very strange to be President Bush. A man of extraordinary vision and brilliance approaching to genius, he can't get anyone to notice.

He is like a great painter or musician who is ahead of his time, and who unveils one masterpiece after another to a reception that, when not bored, is hostile.