Do you participate in reading challenges?! only signed up for 3 reading challenges in 2011, and finished them off from in October. In 2012, I'm pushing it to 7 challenges, 2 of which I'm hosting.

2011 Reading Challenges {Finished List}

No. of books read for the challenge: 10 (Level 2)
No. of books used for other challenges: 0
Favorites

The Hunger Games, Suzanne Collins, Vampire Academy, Richelle Mead, Graceling, Kristin Cashore and Poison Study, Maria V. Snyder
Least Favorite: Clockwork Angel, Cassandra Clare * yes, shocker* - I read this right after reading The Mortal Instruments series also written by her (City of Bones, City of Glass & City of Ashes) - so Clockwork Angel felt like more of the same although it was a different series - maybe I was burned out.
More details: The 2011 Book Blogger Recommendation Challenge Recap

No. of books read for the challenge: 6
No. of books used for other challenges: 1
Favorites: The Girl with the Dragon Tattoo, Stieg Larson and City of Glass, Cassandra Clare.

Least Favorite: Wide Sargasso Sea, Jean Rhys. The writing is strong with vivid descriptions of the characters and the Caribbean islands, but the book seemed disjointed, too long and too boring.
More details: The 2011 Whats in a Name Reading Challenge {Recap}

No. of books read for the challenge: 7
No. of books used for other challenges: 1
Favorites: Across the Universe, Beth Revis, The Marriage Bureau for Rich People, Farahad Zama and The Glass Castle, Jeanette Walls.
Least Favorite: Tales from the Town of Widows, James Canon. The plot for this book held so much promise, but the writing was a boring let-down.
More details: The 2011 Global Reading Challenge {Recap}