I also recommend The Slayers The Slayers Next The Slayers Try The Slayers Revolution The Slayers Evolution-R
In that order. It's ok to skip: The Slayers The Motion Picture The Slayers The Book of Spells The Slayers Great The Slayers Excellent The Slayers Premium
They're not really part of the main canon.
But then you won't catch the ever so subtle joke in The Slayers Evolution-R about who Namo reminds Lina of. (I might be getting her name wrong and I don't really feel like looking it up right now anyway) It doesn't detract from the story much, though.
That was a really ******* odd way to end One flew over the cuckoo's nest. Good movie though. It's about time i watched it though, since it's been my title for months now