1. Best gig
2. Worst gig
3. Band you wished you had seen live but was unable to

To kick this off:

1: Metallica on 'Justice For All' concert - Hordern 1990 - was the only time in my life that I felt frightened at a gig. Metallica played for 3 hours and the place went nuts. They were still an underground band then (just before the 'Black Album' was released). Have never seen so many cops at a gig and felt I was the only one with a job inside the entire place  Did a pub crawl from the inner City of Sydney to the Horden, took 3 hours, remember doing a line of coke on a toilet seat with my best mate 
2: Def Leppard 'In the Round' Sydney Entertainment Centre 1992? - touring on their excellent album Hysteria - the gig 
3: Band wished I could of seen live - The Beatles - end of story - best band ever