Reunion gigs as a rule generally suck. They reek of crass commercialism and are hardly ever as good as the original gigs, mainly because the musicians now dislike each other and it's pretty hard to recreate the magic that they originally had when playing together. A notable exception to this rule was the Pixies' recent triumphant reunion tour but I suspect this is because there was always the feeling that they had split before their prime.
South African bands have been known to stretch the reunion tour to ridiculous lengths. I reckon parliament should have enacted a law called "The Squeal Law" that prevented bands from having more than 5 tearful "final farewell" shows. It would have saved the Nude Girls SA bands a whole lot of trouble.
On the other hand, I think its a terrific idea for Led Zeppelin to do a reunion gig. I would give my left testicle (the good looking one) to attend this show. Almost all modern rock music was directly influenced by these guys and it is one of my lasting regrets that I never got to see them live - in fairness I was 16 when they split. The guitar riff from 'Black Dog' is possibly the greatest riff of all time and it would be unbelievable to hear it being played live by Jimmy Page.
BBC NEWS | Entertainment | Led Zeppelin confirm reunion gig