The Clash live in 1980, probably their peak in my view, although I saw them in every year from '77 to '82 and they were bloody excellent every time I saw them. This is before Topper's heroin habit got the better of his immense talent and dimmed their live performances somewhat.
Stiv Bators and The Dead Boys with 'Sonic Reducer'. Sensational, apart from the hippy introducing them. No beards allowed, ok?