Since I'm not a novelist, professional critic, or a great writer, I can't do any of these things. When I try, it comes off as forced, at best. Instead, if I write a review, I just try to say in plain English what about the book appealed to me, if I liked it, or what didn't work for me, if I didn't.
Have you seen Hudson Hongo's Least Helpful site? Features the worst/funniest Amazon reviews. (He's the guy behind Literally Unbelievable, about people online who think Onion headlines are real)