It's sad. Really, really sad when a bad cover happens to a good author.
I'm sure you've all seen this one:

When I first looked at it, I thought, "Hmmm... is that a guy's body? Yeah, but why do they have him lying face down like that?" Then I was like, "WAIT! is that a LEG up in the left hand corner?" At first I thought they were HIS legs, sticking out of his shoulders. Then it hit me, "Ooooh, Noooooooo....."
A friend took one look at this cover and remarked, "It's a shame. The author is SUCH a nice person, too."
"Well of course she is," I responded. "If Billy Joel is right and only the good die young, then it stands to reason that this bad of a cover could only happen to someone one step away from sainthood."
But on to another type of travesty that isn't so extreme.
Let's take this cover:

I bought this book in a Walgreens. I have a policy where if I'm off the beaten track and find a paranormal romance I don't own, I buy it. Walgreens (or the one across town from where I live) has a HUGE paranormal romance section, which is totally cool, so every time I'm close, I stop in to buy another book there. I figure it's so rare to have a paranormal romance outpost like that I should do my part.
That's how I bought this book. It says Paranormal Romance on the spine, but after I got it home, I read the back of the book blurb and it didn't light me on fire. And the cover -- here this poor woman is, in her nightgown, and her washer has exploded suds all over her nice red drapes. I could never bring myself to read it. It just looked so, so BORING. Ugh.
But then a friend said something about how great Melanie Jackson is and I realized I had that washing machine explosion book (it reminds me of that time Bobby on The Brady Bunch becomes a power hungry lunatic and overflows the washer), so I gave it a whirl the other day. It was a wonderful read!! Although as a warning, this is the last book in the series, so you might want to start somewhere else if you're a stickler for that kind of thing.
But based on this cover, no-no-no.
It doesn't seem fair that we as authors work so damn hard and end up with absolutely no ability to change something as important as this, does it? I wish I had some sort of wisdom to impart to make us all feel better, some sort of suggestion on what to do in this situation, or a battle cry to fight for a better cover. But really, I have nothing. I just hope Billy Joel is right and my theory that sainthood is required for a truly bad cover is spot on. I figure with my past, it will be a long time before I get a really bad one. Maybe not until my next lifetime...