Modern pop culture grinds my gears something rotten. It is this nonsense that feeds the ego's of these severely detached people. For example i have more time for a chubby bbq'er whose last job on this earth should be orating in front of a camera (he fumbles his words often). He is however interesting and decent with no sense of diva instincts even though he has a huge following on youtube. I suppose i like seeing people on our level, they are the real superstars imo. I can't relate to a woman who demands you leave the building whilst she does sound checks.
I could advise these idiots better to endear themselves to fans, i'd tell beyonce and jay-z to sing some city chants at the stadium for their sound checking. It would get to the papers probably and be a fun thing, anything but these repulsive diva like demands.
On a side note i never took to Jay-Z, his rap was always shit next to DMX, Wu-Tang etc. He was the poor mans rapper who somehow made a mint from being generic and partly responsible for the gentrification of rap. Him and puff dickhead between them screwed rap up imo.
Dave Grohl seemingly is as humble as you can get. I have a lot of time for him, not bad on the drums or guitar either :-D