Prior to this the only related kind of movie I have seen was Akira and the Animatrix. I was intrigued, partly through curiosity but from what other people have said in their own reviews. The films are indeed beautiful, amazing imagery, and whilst I didn't think the storylines were very good(or possibly deemed unimportant next to the stunning visuals) it was easy to follow for the most part.
I'm no expert on animated movies but it was easy to see that an awful lot of care and attention to details has gone into these movies, a labour of love I suspect. I enjoyed both for different reasons. I would recommend anyone with a few pounds to spare to take a chance on something different.