What is it?
Come on, you're kidding right? This is a Gundam series.
What's good about it?
Epic storytelling involving the whole world. Big cast of characters. Above-par gundam mecha designs. Well animated. Exciting battle scenes.
What's bad about it?
A lot of the story seems unnecessary and most of the major plot turns happen in the first handful episodes. Some characters (I'm talking about you, Saji and Louise) contribute nothing to the series except context as ordinary people and others are barely developed and if they happen to die, there is no real feeling of impact because of their blandness. When comparing it to the last Gundam series (Seed [Destiny]), the story seems less enthralling and the characters less likeable or memorable. I've just finished watching 00, yet I'm sure I can name more Seed characters off the top of my head.
I always seem to find Gundam series are bad, yet I continue to watch them, year after year. Even against the gundam standard however, Gundam 00 is not very good. I believe that a major problem is that the focus is more on organisations then the individuals. Despite everything, the series ended on a strong note and there is hope for the second season. Still, I wouldn't go so far as to recommend it. Gundam is a niche series anyways so those likely to watch it aren't going to let this review sway them from watching it. Since it's been split into two seasons, the jury is still out on this one but it's so far shaping up as a forgettable gundam series, which is unfortunate since they certainly are due for a good one.
FYI- I'm sick of writing reviews for the moment so you'll have to wait a week for my Bamboo Blade review.