Another vote for "You're Beautiful" by James Blunt--that song is just creepy!!
Anything by Gwen Stefani. And Black Eyed Peas. They're catchy for like, two seconds, then they get really old really fast.
I'm also not a big fan of Carrie Underwood. That "Cowboy Casanova" song is like a cheese grater on my eardrums!
However..."Truly Madly Deeply" by Savage Garden was the "First Dance" song for hubby & my wedding! And we're having major issues right now and about ready to file divorce. Hmmmmm.... LOL