Goldmine, I tell you, a goldmine. Especially the really rubbish early 90s ones which are full of passing filler that hasn't been played on the radio since it left the charts. Take, for example, Now 23 disc 2 from November 1992:

Erasure : "Who Needs Love Like That" (Hamburg Mix)
The Shamen : "Ebeneezer Goode"
Rage : "Run to You"
Bizarre Inc featuring Angie Brown : "I'm Gonna Get You"
Heaven 17 : "Temptation" (remix)
East 17 : "House of Love"
The Farm : "Don't You Want Me"
Undercover : "Never Let Her Slip Away"
Dr Spin : "Tetris"
Ambassadors of Funk and MC Mario : "Supermarioland"
Roxette : "How Do You Do!"
ABBA : "Dancing Queen"
Björn Again : "A Little Respect"
Vanessa Paradis : "Be My Baby"
Betty Boo : "Let Me Take You There"
Sophie B Hawkins : "Damn I Wish I Was Your Lover"
Peter Gabriel : "Digging in the Dirt"
Enya : "Book of Days"
Roy Orbison and k.d. lang : "Crying"
Freddie Mercury and Montserrat Caballé : "Barcelona"

Modern rock'n'roll, kids!