Feel free to poke holes in this list...some are stronger candidates than others. We're just having fun, thought-provoking off-the-cuff chat. As it is, it's really only the tip of the iceberg if you think about all the songs in the rock era...I'll post more when I think of some. I realize I'm all over the map here format & datewise - if you wanted to limit it to "Classic Hits" I'd understand. Plus some of these have been mentioned previously.
1st several are really great "fade-outs", but if you wanna include 'em:
Sultans of Swing - Dire Straits - 1978/79
Hotel California - The Eagles - 1977
The Boys Of Summer - Don Henley - 1984/85
You're No Good - Linda Ronstadt - 1974/75
Everything That Touches You - The Association - 1968
Tunnel Of Love - Bruce Springsteen - 1987/88
Human Touch - Bruce Springsteen - 1992
I'm The Only One - Melissa Etheridge - 1994
The Chain - Fleetwood Mac - 1977
Beginnings - Chicago - 1969/1971
The Beatles:
All You Need Is Love - 1967
I Am The Walrus - 1967
Tomorrow Never Knows - 1966
Crimson And Clover - Tommy James & The Shondells - 1968/69
Bruce Hornsby & The Range:
The Way It Is - 1986/87
The Valley Road - 1988
Now the rest:
Sexual Healing - Marvin Gaye ("please don't masturbate" - ??) - 1982/83
Hot Blooded - Foreigner ("makin' me sing for your sweet sweet thing") - 1978
Start Me Up- The Rolling Stones ("make a dead man come") - 1981
Steve Miller Band:
The Joker - 1973/74 (guitar "catcall" followed by "show you a good time")
Fly Like An Eagle - 1976/77
Queen:
Dragon Attack - Queen - 1980 (in the "olden" days of vinyl with "The Game" album, if the DJ/engineer didn't stop/fade the record quickly after the drum/bass sudden ending, it would quickly go into "Another One Bites The Dust"-hmmm, not a bad ending to that song, either!)
We Will Rock You - 1977
Bohemian Rhapsody - 1976
Prince & The Revolution:
Purple Rain (long version) - 1984 (more of a fade-out?)
Let's Go Crazy b/w Erotic City - 1984
What I Like About You - The Romantics -1980
My Sharona - The Knack - 1979
Can't You Hear Me Knocking - The Rolling Stones - 1971
Cherish - The Association - 1966
Along Comes Mary - The Association - 1966 ("sweeter than punch!")
Good Morning Starshine - Oliver - 1969
Turning Japanese - The Vapors - 1980
I'm A Man - Chicago - 1969/1971
Simon & Garfunkel:
The Sounds Of Silence - 1965/66
Homeward Bound - 1966
I Am A Rock - 1966
A Hazy Shade Of Winter - 1966
Fakin' It - 1967 (coda that's a fadeout)
Scarborough Fair (/Canticle) - 1968
The Boxer - 1969
Bridge Over Troubled Water - 1970 (mentioned previously by another poster)
Roundabout - Yes - 1972
Revolution #2 - The Beatles - 1968
Santana:
Black Magic Woman/Gypsy Queen - Santana - 1970/71
Oye Como Va - 1971
When Will I Be Loved - Linda Ronstadt - 1975
Working For The Weekend - Loverboy - 1981/82
The Eagles:
Heartache Tonight - 1979
Those Shoes - 1979
Amie (long version) - Pure Prarie League - 1975
Journey:
Lovin', Touchin', Squeezin' - 1979
Faithfully - 1983
Won't Get Fooled Again - The Who - 1971
You Keep Me Hangin' On - Vanilla Fudge - 1967/68
Eve 6 - Inside Out - 1998
Zombie - The Cranberries - 1994
Complicated - Avril Lavigne - 2002
Smells Like Teen Spirit - Nirvana - 1991/92
The Kinks:
You Really Got Me - 1964
All Day And All Of The Night - 1964/65
She's Not There - The Zombies - 1964
If I Didn't Love You - Squeeze - 1980
Island Girl - Elton John - 1975
The Cars:
Bye Bye Love - 1978
Just What I Needed - 1978
You're All I've Got Tonight - 1978
Snow Patrol:
Chasing Cars - 2006
Take Back The City - 2008
U2:
Bad (Live) - 1985
I Will Follow - 1981