[Nyororin]

Reading through this, it`s interesting to note how many of the anime receiving bad responses are those where the television production outpaced the manga.
Things really seem to fall to crap once the anime uses up all the original material and starts making it`s own story...

To actually give my personal opinions of the worst out there....

Musashi Gundou
and
Kabuto-Borg.

Musashi is seriously the most poorly produced and not thought out piece of crap to air... The pathetic excuse for a story completely falls apart after a couple episodes. And that`s not even mentioning the incredibly bad animation.

Kabuto-borg is ... almost as bad. I simply have no words to accurately describe it. But at least it`s to the level of WTF? that can make it absolutely hilarious to watch and make fun of.