Although I read the bulk of it in December 09, I actually finished it at around 6pm on the 1st of January, so I'm dubiously including it... I don't know if there's any benefit in writing what I liked about it but I thought it was a good book albeit very dense. As an overview of the first 50 years of human habitation on Mars it got a bit confusing. There were times where I didn't realise a decade had passed between one chapter and the next. Still, the characters were interesting and the politics, although often glossed over, were pretty absorbing. I wish I'd had more "space" to experience the trials that the characters faced.