The best live show that I've seen must be Blondie definitely, everything was just so perfect that day.
And also Hanoi Rocks is always great, too bad that I will never see them again.
Also Kiss was great with that big entertaining show, it was very exciting from the beginning to the end.
Alice Cooper was ok but not as great as what I was expecting.
Twisted Sister was NOT that good but that's perhaps because I don't like it that much.
An other one that I always enjoy is Lordi, I've actually seen them live 15 times and they (almost) always have great shows... Only a couple of times have I seen them perform and it wasn't good, you know when there's an audience that's not so exited or if the band has had a long tour behind.
And I think it's interesting that Richard never really liked performing... But I do understand it and R*bert wrote it in a way that made me see how he must feel about it. (Or was it R*bert who wrote that?)
Sorry if I have many typos, I'm too lazy to check, haha.