I like the look of matte, but it's never practical because it ends up covered in fingerprints which drives me nuts.
I'm with Dave on the movie tie-in covers; I've noticed now the e-books I have update their covers if they end up adapted (my Song of Ice and Fire series is slowly being compromised on my nook).
I'm on team anti-pics-from-movies-on-the-cover. I was thinking about buying Cloud Atlas and I actually wondered if I could still find a new copy without some famous person on it. Then I didn't bother to go to the store, so my story has a happy ending: me being 86 years old.
I have a bunch of movie tie in covers, doesn't bother me. But I guess I'm the only one seeing them, and I just care about the inside anyway. If I were going to have them out in public, or at the very least, in the living room, maybe I'd pick out the nicer looking ones for that. As it stands, the bookshelf is in the bedroom, where no one can judge me or my lame covers.
Here's something else I...well, dislike. I have a copy of "The Town" with Ben Affleck's giant mug on the cover. Because I guess when Chuck Hogan wrote Prince of Thieves the title wasn't good enough.
or
Matt Damon gracing my cover of Imperial Life In Emerald City, or in Hollywood parlance "The Green Zone." Okay, so that title is a little wordy, but, with respect to the author, both titles are fairly prominent on the cover and spine, unlike The Town which has a tiny little blurb about being previously published as Prince of Theives.
And lastly, I'm all for author's getting movie deals and collecting royalties. Good on them if a movie generates another printing of their novel, I'm certain it gives a boost to sales. I'll continue to be neurotic and opt for the books non-Hollywood iterations.
This is the most egregious tie-in cover of all time, in my opinion. It's just called Push, yo. They made it into a film whose title happened to include the adapted novel's title, so now the tie-in reflects the film title, when all they had to say was Push, and simply mentioning at the top that it was now a major motion picture would've been sufficient. I guess at least it's not a novelization of a film of an adaptation.