The body hiding isn't as difficult as most people make it out to be. I mean, just head out into the woods and drop them off. Oh, and use gloves.

The other option is what I do. If it's truly awful, and I can't make it all the way through (I made it half way through the second Eragon book) then I just tell the person that I just couldn't get into it, and it wasn't for me. In fact, when you tell them, bring a book along that's actually good, and maybe try the same thing on them. Who knows, maybe they'll suddenly become enlightened just by reading one really GOOD book.

Eragon was....well...If Lord of the rings had sweaty, nasty sex with Star Wars while Anne McCaffrey watched.....there ya go. Not the worst book ever, just so incredibly unoriginal that it was difficult to keep going and I eventually decided to just go watch Star Wars, and read a few key chapters from LOTR and Dragonriders of Pern.