Just finished watching this a little while back -- I watched it on a legal streaming site (Bandai has their own YouTube channel) in Japanese, and did I ever enjoy it! I ordered the special editions that Bandai put out a little while back, and received the final installment today in the mail. I was so happy (I'm such a nerd)!
It's quite a dark series, that's for sure. Things don't go the way you expect them to, and it kept me guessing throughout -- that's quite an achievement nowadays, when so many anime are pretty generic. I know this one came out a little while back, but between the art and the story, I highly recommend it. And Bandai does a really nice job with their extras -- soundtracks, audio episodes, plenty of inserts... I'm duly impressed, I must say. I'm going to be buying R2 when it comes out as well, and from what I've seen it will be just as good as the first series.
This is sort of a *spoiler*, if you don't know the general gist of the story already - so don't read this paragraph if that's the case..... Lelouch kind of goes off the deep end somewhere around half-way through the first season. Kudos to the writers who could still keep the audience sympathetic with his character for another season and a half! I found myself smirking even though he turned into such a baddie -- I wonder if that would have been the case if his character design had been ugly... probably not. Darn those pretty boys by CLAMP!!!
*End of spoiler* -- all in all, this is a series I would definitely recommend owning yourself, it has good re-watch value between the twists and turns and it's beautiful artwork. And Bandai simply did an amazing release with the special editions -- it's the only way to go! And even though the English track is good, Lelouch is so much more theatrical in the Japanese version, so try that out too! Enjoy!