People say I hate Xtina, but I really don't the ballad that has slain me the most ever is "Hurt," without a second consideration. It's so large of a difference enough with the 2nd best ballad that I don't even feel like giving other examples.
Adele - Someone Like You
Adele - Take it All
Adele - Don't You Remember
Adele - Turning Tables
Bruno Mars - Talking to the Moon
Coldplay - Fix You
Coldplay - The Scientist
Christina Aguilera - You Lost Me
The Fray - How to Save a Life
The Fray - Never Say Never
Kanye West - Street Lights
Lady Gaga - Speechless
Lady Gaga - You and I
Linkin Park - The Messenger
Linkin Park - Waiting for the End
Linkin Park - Iridescent
Linkin Park - Burning in the Skies
Paramore - The Only Exception
P!nk - Please Don't Leave Me
The Script - Breakeven
Snow Patrol - Chasing Cars
Tears for Fears - Mad World
Tracy Chapman - Fast Car
The Temper Trap - Sweet Disposition
in other artist...
Titanic Celine Dion comes to my mind, Kelly Clarkson 'Because Of You',
Mariah and her HUGE ballads like 'We Belong Together', 'Without You' and 'I Want To Know What Love Is'
Britney when she used to do ballads were good too
X Tina with 'I Turn To You'
No Doubt - 'Don't Speak'
Justin Bieber - That Should Be Me (Acoustic)
and many many others that I'm forgettin!
even spanish ballads that maybe u don't know of artist like Luis Miguel, yesterday actually I got salyed with this classic by Cristian Castro! http://www.youtube.com/watch?v=p0r9955DMB8