Singing Sad, Sad Songs

In a Rolling Stone blog today, it was reported that a group of English scientists have determined that "The Drugs Don't Work" by The Verve is the saddest song of all-time. This was decided by measuring blood flow and brain activity while subjects listened to songs on headphones. This is, of course, insane. That is a pretty sad song, but there are much, much sadder. Considering this blog has pretty much degenerated to a list of the songs that I like, here is my list of the saddest songs that I've heard:

"Tears in Heaven" by Eric Clapton
"I Just Don't Think I'll Ever Get Over You" by Colin Hay
"How Can You Mend A Broken Heart?" by Al Green
"Charlene" by Anthony Hamilton
"Nutshell" by Alice in Chains
"Brick" by Ben Folds Five
"Streets of Philadelphia" by Bruce Springsteen
"Little Wing" by Jimi Hendrix
"Wish You Were Here" by Pink Floyd
"Morning Yearning" by Ben Harper
"High and Dry" and "How To Disappear Completely" by Radiohead
"Black" and "Come Back" by Pearl Jam
"My, My, Hey, Hey" by Neil Young
"The Scientist" by Coldplay
"This Brilliant Dance" by Dashboard Confessional

Any others?