The Fast Red Road by Stephen Graham Jones
It's a book by a Native American, and to put it kindly...it's pure shit. There is no central plot, it bounces around constantly to the point that you have no clue what the hell is going on. He tries to weave all these metaphysical images into a story about some dude doing something, and you're just left with a novel that is nearly unreadable.

Monkey Bridge by Lan Cao
An oh too common immigrant tale. Nuff said I think. Not terrible, just incredibly common, overdone, and not good enough to stand out above the crowd.

And the one I expect to get shit about....

The Silmarillion by Tolkien
I'm sorry, but about all this book has going for it in my opinion is the name of the author and the fact that it's set in middle earth. Tolkien tried writing something of a bible for his world, and I guess he succeeded, because like the bible I found it to be boring, and barely worth opening. In all honesty I have pretty much nothing nice to say about this book. I spent months studying it in a class dedicated to Tolkien, and even studying and "understanding" where he was coming from and what he was doing didn't make me like it more, if anything it made my disdain all the more powerful.

Edit: Ceremony by Lesli Marmon Silko
I won't subject you to why I hate this book, I will just say it is my most hated book of all time. I have read it 4 or 5 times and I hate it more each time. (I had to read it for a number of different classes, it's apparently becoming quite a popular book to make English Majors read)