While not necessarily the most breakthrough anime ever, this is an extremely enjoyable show that never gets boring. The direction in this show is just amazing and have yet to find a moment in the show where I was baffled or otherwise 'put out to lunch'. With an amazing score, an engrossing story, and an ensemble of great characters (portrayed by an amazing English cast no-less), this is a must-see anime and much under-appreciated both in Japan and North America. If you're unsure, just check out the free stream on this website to youTube. You won't be disappointed.
Oh, and by the way, I went into this show knowing nothing except that it might be generic' boy, was I wrong.