Only the test of time proves what music is truly great, what endures, but it is my firm belief that the greatest predictor of what will stand that test, in the here and now, is how widely an artist is covered by other artists; yet better across the widest variety of musical genres, and by artists from different walks of life (sex, race, class, religion, country of origin, etc). When not just one, but hundreds or thousands of other artists cover your music, it shows that your music truly crosses the boundaries that otherwise divide our universal human truth, and that is the truth that will carry you across the waves of time.
So you only more deeply demonstrate how powerful Radiohead's melodies are to show them covered by others. As with the Beatles or the Stones, the covers of their music are legion. We're talking about a 90's alt-rock band that gets played in churches at funerals. Simply incredible.