I saw this over at S F Signal. Amazon has listed its editors’ choice of the best SF/F books of 2008.
The top ten:
1. Liberation: Being the Adventures of the Slick Six After the Collapse of the United States of America by Brian Francis Slattery
2. The Drowned Life by Jeffrey Ford
3. The Resurrectionist by Jack O’Connell
4. Tender Morsels by Margo Lanagan
5. Anathem by Neal Stephenson
6. Last Dragon by J.M. Mcdermott
7. Black Ships by Jo Graham
8. The Stone Gods by Jeanette Winterson
9. Matter by Iain M. Banks
10. Victory of Eagles by Naomi Novik
I haven’t read any of these, so can’t really vouch for the quality of the list. You can see the Amazon page here.