Wow... I can't believe there isn't already a thread on this.... I'm kind of shocked.
Anyway. I really love this series. There's the first nine books of the series Gensomaden Saiyuki ((generally "Saiyuki" )) and then there's Saiyuki Reload. It's so funny. HOnestly, if you people appreciate sarcastic humour and wit, then this is for you. And any of you who have read it, what do you think?
And then, there is also the back story, Saiyuki Gaiden. it's not published in English yet. It's not even licensed yet. lol. But it's interesting. It's very good. You should check it out.