1) Pink Floyd '87 Ent Cent. Sure it was without Waters but it was still Floyd and blew me away. The sound quality, the special effects, David Gilmour, nothing like it.
2) Queen '86 Ent Cent. What can you say about Freddie ? Everything !
3) Narara '83 - Angels, Chisel, Mentals, Oils, f**k I can't remember, it was a 3 day outdoor concert and those brain cells involved stopped working long ago.
4) Elton John '81 Horden Pavilion - special midnight concert as it was EJ's birthday and he just kept playing ! (and his voice was good back then)
5) Deep Purple 'mid 80s Ent Cent, when a special guest got up on stage for 3-4 songs. It was George Harrison.