Johnny Marr picks the 4 Tops, Billy Bragg speaks lines about doomed teenage love on the B-Side of Levi Stubbs Tears:
https://www.youtube.com/watch?v=Am9s85pfH8I
A candidate for the greatest last line in pop music.
Getting back to B-Sides (and hopefully as far away from Genesis as possible), here's Otway's second greatest song, stupidly put on the b-side of his greatest:
https://www.youtube.com/watch?v=afkEqz6538o
Talulah Gosh's B-Side of Beatnik Boy:
https://www.youtube.com/watch?v=wuTdG-DBbSE
And a...