a lot :

1.Britney Spears - Everytime ,Im Not A Girl, Shadow, heart, Where R U Now.
2. Spice Girls - Viva Forever
3. Vitamin C - Graduation/ Friends Forever ( is it a ballad? )
4. Xtina - Reflection & Beautiful.
5. Kelly Clarkson - Because Of You.

Evanescence - My Immortal
S.H.E - Yue Gui Nu Shen & Wo Ai Ni
Avril - I'm With U
Shania Twain - Ure still The One & From This Moment
Mariah carey - Through the Rain & My All.
Michelle Branch - Goodbye 2 U
Jessica Simpson - I Wanna Love U Forever
t.A.T.u - Gomenasai
PCD - Stciwkitu
Chantal kreviazuk - Leaving On A jetplane
Joey McIntyre - Stay The Same.
Emilia - Big Big World
Five - Until The Time Is Through.
B*Witched - To U I Belong

So so many, it change from time to time. but hey, this is I can think of right now.

1. Nothing fails - Madonna
2. Whenever U call - Mariah Carey
3. Insatiable - Daren Haynes
4. Reflection - Xtina
5. Until - Sting.

McFLY - The Ballad Of Paul K
This Song Touched my heart, About a guy who has a bad life which leads to drink, he loses his family and deals with the consequences. Touched my heart and the video is weirdly moving.

Mariah Carey - Hero.
Simply Because I Adore it.


Kelly Clarkson - Because Of You
My Idol...

I don't know if this counts but Enrique (sp) - Hero.
Simply because its Harrys Song.

Ooh, I forgot one

Maria - I Give, You Take (LOVE IT)

There's A singer called Maria?! Awesome!!