5th June 1983 - War Tour, Red Rocks, Denver, CO, USA.
When watching the video, you just want to be there! Unfortunately, my first U2 concert wasn't until 1989 (LoveTown), so I missed out on their early years. It would have been just amazing to experience a show from this period, and Red Rocks would definitely be my pick.
13th July 1985 - Live Aid, London, England.
Not strictly a "U2 concert", of course... but how I would love to have experienced, at first hand, U2's stunning performance of 'Bad', with that massive crowd all singing 'Walk on the Wild Side" in unison.
4th November 1989 - LoveTown, Christchurch, New Zealand.
U2 were huge in New Zealand back in 1989 (thanks to Greg Caroll and One Tree Hill). I managed to get to the Wellington concert a few days later (my first U2 concert - and I wasn't even a U2 fan at the time), but I know a lot of people who went to the LoveTown concerts in NZ, and Christchurch always seems to be the one that gets talked about the most. Even so, the Wellington one was still a great, great show. They certainly caught my attention!
27th November 1993 - Zoo TV, Sydney, Australia.
This is the one concert I would give anything to be able to turn back the clock and be at. Of all the U2 concerts I've been to, watched on video, or listened to, Zoo TV Sydney is my favourite. I'm still kicking myself for not taking the short flight over from New Zealand to see at least one Zoo TV show in Australia. And with Sydney being the closest city to my hometown in NZ, it would have been this show that I would have gone to. Unfortunately, the timing just wasn't quite right for me.
1st September 2001 - Elevation Tour, Slane Castle (second show), Ireland.
I was at Slane #1, but I couldn't afford to stick around in Dublin for another week, and was gutted (at the time) that they chose to film the second show. Happy enough just to have it on DVD now, though.