Most annoying voice?

[luzribeiro]

So who in your opinion has the most annoying voice when they sing?

I think Im'ma just toss some suggestions around, but it's your call...

Rihanna sounds like an empty beer can rolling down a hill. Or like Woody Woodpecker (see above)
Enrique Iglesias looks like he's about to start sobbing any moment
Hillary Duff sounds like a nasally congested 5 y.o.
Shakira sounds like a mare in heat
Christina Aguilera, she's been trying too hard
Nelly Furtado sounds like a bag of nails
Michael Jackson always seemed to have his balls squeezed
Ashley Tisdale pinches her nose and holds her breath as if she's drowning
Justin Bieber. Need I say more?

And some others: Akon, Sean Paul, Avril Lavigne, Boa Kwon, Ayumi Hamasaki, James Blunt, Mika, Beyonce, Ciara, Justin Timberlake, Fergie, Ashlee Simpson, Britney Spears, Gwen Stefani, Kelis, Jessica Simpson, Lindsay Lohan, Paris Hilton, etc.

Your take?