Don't You Forget About Me. I think thats the title, can't remember the band.

Its over - Level 42

Excellent band btw

Saddest song

Agadoo - Now thats sad

But I love it

I was gonna post that, I got it as - Heaven (9/11 remix) - Dj Sammy

Blowers daughter .. damien rice .. not sad - reminds me of kevin and makes me horny heehe

Snow patrol - chasing cars
All American Rejects - it ends tonight
Muse - invincible

Sad songs:

Fuel - Hemorrhage in my hands - brilliant rock song
"don't fall away, and leave me to myself, don't fall away and leave love bleeding, in my hands, in my hands again" Not ashamed to admit that I have caught myself tearing up to this song

Edit: Just found the youtube vid for Fuel, strongly suggest peeps check it out:
http://www.youtube.com/watch?v=2K4B7s2njvo

Andrea Boracelli - Con Te Partiro - brilliant piece of semi classical music, it translates to "Time to say goodbye"

I know of loads more, but I prefer happy rock to sad music Things like Feeder - Just A Day always brings a huge smile to my face

Edit 2: Blue Oyster Cult - Dont Fear the Reaper - ok, not so much the song, but the lyrics? Talk about music to slit your wrists by

Brand New - The Quiet Things That No One Ever Knows - Specially when you combine it with the video, it can be a very emotional song.

Seasons in the sun by terry jacks !972

i think the sadest song ive listened 2 recently has to be 'right here waiting for you' by Richard Marx

any type of feckin chart music rnb boy bands etc thats very sad

Johnny Cash - Hurt

Scream - Echobelly

Guns N' Roses- November Rain
Sinead O Connor- Nothing Compares 2 U
My Chemical Romance- Cancer
Eric Clapton- Tears in Heaven
Sarah MacLachlan- Angel
Eric Carmen- All By Myself
Rent Soundtrack- I'll Cover You Reprise (makes me tear up everytime)