Way back when, Noel Gallagher of Oasis stated his dismay at a rap artist being chosen to headline the Glastonbury festival out her in the jolly ole'. Glastonbury was supposed to remain for guitar based rock music (even if Amy Winehouse was performing as well, but not going there). It was plastered all over the free newspapers of London, but I heard nothing of a retort by Jay-Z, which you have to admit is a bit unusual for a rapper.
This is perhaps the classiest comeback. As reported by Spinner, Jay -Z simply acquiesed to Gallagher, performing classic Oasis song, "Wonderwall" at the show as part of his set.