Favorite Songs: New & Improved Post

Last night at the Bonnie Raitt concert she sang "Angel from Montgomery" which I had forgotten is one of my favorite songs. (The John Prine & Bonnie Raitt version; link is to a version with her and lots of other cool people)
This led me to ponder what other songs would go on my list of all time favorites.
So far I've come up with:
"Fire and Rain" by James Taylor
"Hallelujah" by Leonard Cohen (and the Rufus version, of course)
"Dancing Queen" by Abba (the Robbie Fulks version from a Fresh Air interview, it's at about 27:00)
"Norwegian Wood" by The Beatles
"My Home Town" by Iris Dement (and the Kate Rusby version)
"Don't Go Back to Rockville" by REM
"Tangled Up in Blue" by Bob Dylan

*Additions:
"Landslide" by Fleetwood Mac (I also like the Dixie Chicks cover)
"Killing the Blues" by Shawn Colvin
"Oops I Did it Again" cover by Richard Thompson
"Tempted" by Squeeze
"Lady is a Tramp" (Here's a version by Sinatra & Fitzgerald)
"Summertime" Billie Holiday
"State Trooper" Bruce Springsteen
"River" by Joni Mitchell
"Out on the Weekend" by Neil Young (cool version from the BBC)
"Speed of the Sound of Loneliness" John Prine


I know there are many others, but my mind is tired from staying up late last night. Dear readers, what are your favorite songs of all time?