Ok, a few days ago I wrote this post that basically said Inuyasha was a great anime and that the manga goes on further and the story is still going. Here I am telling the same thing about Berserk. The story is a cross between Flesh+Blood and Hellraiser. The anime ends suddenly at chapter 11, but the manga has reached chapter 32 and goes on. You can find the manga online here and here and here.
If you can read Japanese, here is the official site for Berserk.
Update 11 Oct 2009: A new anime started, continuing the InuYasha story, although some people seem to not agree with the interpretation of the manga. It is called Inuyasha Kanketsu-hen (or Inuyasha Final Act) and it starts where the first anime ended. Having just seen the first episode, I must say that I can barely understand what is going on anymore. There are so many characters and I don't really remember how they cam to be as they are now. So my recommendation is to read the chapters of the manga from about chapter 360. Here is another link where you can read InuYasha chapters online: Inuyasha on OneManga.
A while ago I've seen the Inuyasha anime series and fell in love with it. But at that time I didn't have a blog and I also thought that most Japanese anime is that good. As written in my review back then, I was soon crying for more episodes when it ended. I got a bit upset, too, because the series didn't end anywhere. It just stopped!
But, even if it is something obvious, I never thought about searching for the Inuyasha manga! Yes, the anime is based on a manga series that is, as I write this blog, ongoing and (almost) close to its finish. And you can read it! Free! online! :)
Ok, here is the link: Read on!