All the news about the "Stairway to Heaven" lawsuit reminded me of this lovely arrangement of another creative dispute: Radiohead's "Creep" vs. The Hollies' "The Air That I Breathe."
The Moon Loungers demonstrate how the chord progression for "Creep" is pretty similar to the earlier song. In fact, the "Creep" credits were amended after publication to credit The Hollies members Albert Hammond and Mike Hazlewood.
Background on the Stairway suit: