23. Johnny Cash and June Carter, "Jackson"
Inspired by Edward Albee's fiery four-character play Who's Afraid of Virginia Woolf, Billy Edd Wheeler wrote "Jackson," about a couple whose romantic spark was losing its flame, and sought input from legendary tunesmith Jerry Leiber ("Hound Dog," "Jailhouse Rock"). More an editorial contributor than co-writer on it, Leiber suggested placing the then-buried "We got married in a fever, hotter than a pepper sprout" line at the beginning of the song, thus creating one of the most famous opening lines in country music history. Although first recorded by the Kingston Trio in 1963, the best-known version came four years later from yet-to-be-married singers Johnny Cash and June Carter. "Jackson" became a Number Two hit and a Grammy winner for the dynamic duo and has since been featured in such blockbuster films as Walk the Line and The Help.