We've already talked about best and worst of 2010, but what about the rest of these categories? See other answers here.
Most disappointing book
Most surprising book
Book you recommended to people most
Best series you discovered
Favorite new authors (Suzanne Collins & Kate Atkinson)
Most hilarious read (didn't really read any other funny books)
Most thrilling, unputdownable book
Favorite cover
Most memorable character (Aibileen)
Most beautifully written book (I don't know if it's actually beautiful but I love her writing style.)
Book that had the greatest impact on you
Book you can't believe you waited until 2010 to finally read (Well, re-read. It had been 15 years.)
