wow..I'd like to find the editor that ok'd it..I could be published in no time..;) It's hard to say the worst book, if it gets bad, I tend to make another trip to the used book store and replace it..;). Surprisingly, a book by Saberhagen about the Berserkers was fairly annoying, because about 10 pages into it, the historical parallels to the Battle of Midway become overwhelming (you realized how it was going to end before you're even a third of the way through..;) He admits to it in the afterword..so I guess he gets points for that
Actually, the worst book(s) I've ever read are any 5th book in a Piers Anthony collection..the guy really doesn't know when to quit. The first is good, 2nd ok, 3rd..well, you see how it goes. But that's just a tiny collection. Trying to read Kipling's the Light that Failed, I've tried twice, and never made it..;)

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)