The Most Beautiful Song of The RnR era?

Don't forget Van Morrison. Too many to mention but you can't go wrong with what ever you choose. Then there's Rubber Soul...
Er..how you define the RnR era?

Martykl, Do you mean "Beeswing" by Richard Thompson? Great song. If not, add it to the list.

Marvin Gaye -What's going on

Crosby, Stills & Nash -Guinnevere

David Bowie -Letter to Hermione

Santana -Samba Pa Ti

Van Morrison -I'll Be Your Lover Too, Into the Mystic, Hymns to the Silence

Led Zepplin -The rain Song

Richard & Linda Thompson -Dimming of the day

Rolling Stones -Lady Jane, Wild Horses

Big Brother & the Holding Company w/Janis Joplin -Summertime (Gershwin)

Annie Lennox -Cold, The Gift, Why

Al Green -I'm Still in Love With You, Let's Stay Together

Mazzy Star -Fade Into You

Beatles -Because, I will, Julia

Sarah McLachlan -The Path of Thorns (Terms), Drawn To The Rhythm

Bob Dylan -Girl from the North Country (w/ Johnny Cash)

Simon & Garfunkel -America

Nike Drake -Cello Song, Pink Moon, Which Will

Crowded House -Don't Dream It's Over

Dusty Springfield -Son of a Preacher Man

Tom Waits -Ol' 55, I Wish I Was in New Orleans, This One's from the Heart (w/Crystal Gayle)

Yes -Mood for a Day

The Jimi Hendrix Experience -Castles Made of Sand

Elvis Costello, Alison

Bruce Springsteen -Thunder Road, She's the one

Rickie Lee Jones -The Last Chance Texaco, We Belong Together

Cowboy Junkies -Blue Moon Revisited (Hart/Rodgers), Something More Besides You, Crescent Moon

I'm sure I missed a couple hundred or so but there is my take on beautiful songs of The RnR era. Guess this generation or so since doubya, doubya 2 hasn't accomplished much...(just kidding) Happy Listening!

Thanks for the ideas, everyone.

To clarify:
R'n'R era really means music made by rock musicians. Since the idea is to debunk his notion that rock musicians haven't made any beautiful music, I thought a well selected compilation might broaden my father in law's view of "r'n'r" songwriters while allowing me to get in some contemporary music listening time during the family vacation. Though some responses went a different way (my original post was worded more generally), I'll look forward to exploring some of those suggestions for my own benefit.

Beeswing did refer to the Richard Thompson song. If my FIL is ok with RT's voice, I'm betting he'll like the song.

Fleetwood Mac- Landslide

Bruce Springsteen- Two Faces Have I

U2- One

Weezer- Island in the Sun

Dave Mason- Sad and Deep as You

Elvis Costello- Every Day I Write the Book

Graham Nash- Simple Man

Neil Young- Harvest Moon

Beatles Here Comes The Sun