1976: Mud's surprising late sideroad into disco (the first dancefloor hit penned by the man who'd write Can't Get You Out Of My Head and Groovejet), Cliff Richard in jeans so tight you can tell his religion (oh, wait) and the actively sickly JJ Barrie leaving even Noel taking the piss. Also, the Stylistics-soundtracked debut of the mighty Ruby Flipper.
1982: Football fever, not to mention a right crush backstage, with World Cup songs in the form of England's We'll Fly The Flag (not online AFAIK) and Scotland (John Robertson's cameo particularly worthy) plus Chas & Dave and Tottenham on Cup Final duty. Steve Archibald was alone in pulling double duty, only session singer extraordinare Tony Burrows matching that feat of appearing twice the same week with different acts. Elsewhere Junior meets his people, Tight Fit suffer thematic follow-up trauma and Patrice Rushen accessorises her headband. And in case that wasn't enough, Paul and Linda McCartney popped by to mark Ebony And Ivory at number one. Paul seems to be enjoying Bananarama.
1993: 2 Unlimited back when you could still get away with this kind of thing, while Ace Of Base make do with a big sign and some ersatz sax.
2005: Fearne Cotton introduces her at the wrong point of the link, but Gwen Stefani and her marching band coterie won't be stopped that easily. The Tears' Brett Anderson still thinks it's 1993.