Books you are critical of

I tend to criticize the first few chapters of a book more than anything.  I thought the first chapter of HHGTTG was crap, put off reading it for a year, then finished the entire series in a week without bias.  I'm going through the same thing with Harry Potter.

Other books I loathe having finished, such as the Thrawn trilogy of Star Wars novels that were sitting on my shelf for so long.

Books I liked in junior high and high school that I've tried to reread I find I am critical of. Especially Piers Anthony and Robert Heinlein for poor character development and dialog.

Also most authors on the best sellers list. Most really famous ones that crank out books nonstop do so because they aren't writing quality (Dean Koontz, James Patterson).

Also any new fantasy books because it has all been done before (Eragon, Harry Potter) and I hate retreads.