I love going to concerts. some of the standouts are:
U2 -Zooropa (looking forward to the Vertigo tour too)
INXS (unfortunatly without Michael Hutchence
)
R.E.M. (I was pleasantly surprised by how great this concert was)
Neil Diamond (seen him twice, not bad for an oldie. his music rocks!)
Noiseworks (Jon Stevens!!! what more can I say)
I've seen heaps of Aussie groups too but I won't mention them as no one will know them.