"I actually don't think U2 are capable of jumping the shark, but I am starting to worry a little."
There are some people who thought U2 jumped the shark w/ R&H, AB, Zooropa, Pop, ATYCLB, HTDAAB, and many other 'incidents' (e.g. Ipod). There have been alot of exit points for U2 fans along the way, including every album since JT. Everyone has an opinion, and when it comes to U2, those opinions tend to be all over the board. I tend to agree that Vertigo 2 was very rock-n-roll. If Neil Diamond plays "Sweet Caroline" twice, so what? It's not like U2 is playing one of their '80s hits just to please the crowd, they played a new song. I just don't see what's so lame about that, esp. when the place is going absolutely nuts. Neil Diamond's shows are never that energized!