Okay, so Adele. I love her voice, but I'm really torn when it comes to her cover of "Lovesong" by the Cure. I think I like it, and may even grow to love it, but the Cure is my favorite band of all time. 311 nearly destroyed it a few years ago, so I'm very hesitant to put my trust in anyone else covering their stuff.
I'm pretty sure it's a winner though.