Depends if you like good samurai anime or whether you like samurai anime that's so bad you get entertainment value out of thinking "How was this allowed to be made?"
Ninja Resurrection is one of the worst anime shows I've ever seen - so much so that the very stupidity and ridiculousness of it was in itself entertaining. If you pick it up cheap with the intention of having a laugh over it with your friends, it's fun. Otherwise steer well clear of it.
I remember this one. Unfortunately Really is bargain bin material. Unless excessive gore is all you want over say, character development, plot and an ending that makes sense, then I concur with Martin. AVOID.
It's been a while since I watched Ninja Resurrection, but I don't remember it being quite as bad as most people say. There's not much in the way of plot, true, but the design work and action scenes are impressive. It was produced by team Giant Robo which explains the stylistic similarities, if not the excessive gore and sex ^_^;