I haven't compiled a list myself; if something looks dull to me I try to sneakily pass it along to some other hapless reviewer. I can tell you that the worst book I read in 2009 was (no surprise here) Dan Brown's The Lost Symbol.
The Book Maven over at the WETA Book Studio agrees that The Lost Symbol is one of the worst of 2009: "Perhaps it's due to the self-referential nature of Washington, DC as main locale, but Brown's long-awaited book felt downright claustrophobic to me, as if Robert Langdon were shutting me inside of a Masonic tomb." Exactly!
But it's too easy to unleash rage on Brown (or, say, Mitch Albom, another favorite punching bag of literary critics). The Maven gets down and dirty and is brave enough to trash books other critics (including this one) have loved. But while I take issue with her including Lorrie Moore and Stieg Larsson on this list, I cannot help but confess a deep and profound disappointment in Barbara Kingsolver's The Lacuna. There. I said it.
Her picks (and read the full story here):
The Angel's Game, Carlos Ruis Zafon
Geoff in Venice, Death in Varanasi, Geoff Dyer
The Lacuna, Barbara Kingsolver
Her Fearful Symmetry, Audrey Niffenegger
Twenties Girl, Sophie Kinsella
A Gate at the Stairs, Lorrie Moore
Cleaving, Julie Powell
The Girl Who Played With Fire, Stieg Larsson