Despite my predilection for The Ramones I think I'd go for Rory Gallagher in the Kent University sports hall in '77.
Fantastic passionate set right from the off which was 'secret agent' followed by 'moonchild' including the acoustic gems (like 'out on the western plain') all on his own on a stool with a single spotlight on him half way through.
Classic shin kickin'

hard bluesy rock flawlessly played at very high speed with a band that were clearly having fun as well.
And it was a wet night in the week as I recall. He came and with his band gave it everything for well over two hours.
Some of the live stuff of his that's out there now is really good. I'll never forget that night.
