BurningBang

This OVA series has to be one of the most underrated anime ever. Although at first glance this may seem very stupid, but actually its very funny. It takes "Devilman" a very serious show along with "Mazinger Z" another series show although it did have some comedic moments and basicly parody them along with their creator Go Nagai himself. Plus although I doubt anyone will count this as cannon, but it also bridges the gap between "Devilman" and "Violence Jack" another work of Go Nagai. The only minus I can see is that if the person watching isn't aware of anythingDevilman, Mazinger Z, Violence Jack, or even Cutey Honey related then they wouldn't get pretty much all of the jokes, so only GO Nagai fans will be able to enjoy this.

honsou

What we have here is a real gem. In the same sort of style as the original SD Gundam OVAs, CB chara Go Nagai World merges the worlds of Devilman and Mazinger Z and trap them in a sort of chibi world. While it almost always keeps a light hearted tone, you never feel like your watching something for kids. The story is a bit weird but since its just a Chibi parity, it actually works pretty well. If your a Devilman or Mazinger Z fan you should definitely check this out, as the jokes will mean all that much more if your a fanof either series.