Some of my favorite songs are......

Curtis Mayfield: People Get Ready (including covers by Persuasions and Eva Cassidy)
Paul Simon: Diamonds on the Soles of Her Shoes
Jackson Browne: Before the Deluge
Bob Dylan: Pick any one of a dozen or more
The Band/Robbie Robertson- The Weight, Night They Drove Old Dixie Down

I'll add more later

Cowboy Junkies:Sweet Jane
Chris Isaak:Solitary Man
John Hiatt:Somebody Stopped Calling you Angel
Richard & Linda Thompson:Shoot out the Lights
Elvis Costello:Alison

My current favorite songs:

Duke Ellington and Louie Armstrong: Duke's Place
Neal Young: Harvest Moon
Roxy Music: Dance Away
Jennifer Warnes: The Nightingale
Blood Sweat and Tears: Just One Smile
The Wailing Souls: Heartbeat Accelerating
Bob Marley: Three Little Birds
Talking Heads: Whispering Winds
Tom Tom Club: Say I Am

I've intentionally mixed genres to "keep it real"

Clash: London Calling
Marshall Crenshaw: Whenever You're On My Mind
J.S. Bach: Arioso (Ok, technically it's not a song...)
Genesis: Supper's Ready
Rickie Lee Jones: Skeletons
Spock's Beard: At the End of the Day
Elvis Costello: Watching the Detectives
Shootyz Groove: L-Train
L.V. Beethoven: Ninth Symphony (Choral)
Go West: King of Wishful Thinking
Metallica: Master of Puppets
Jane Monheit: Over the Rainbow
S. Rachmaninoff: Piano Concreto #2
Joe Jackson: A Slow Song
King Crimson: Frame by Frame, Exiles
Louis Armstrong: Solitude
Allman Bros.: Melissa
P.M. Dawn: Set Adrift on Memory Bliss
S. Rachmaninoff: Symphony #2
Pat Metheny: First Circle
Remy Shand: The Way I Feel