For me, the Megadeth tour a couple years ago with Rust In Piece played in it's entirety is definitely one I wish I could attend again. Tool on the Undertow tour. Primus at Ozzfest in Vancouver, early 2000s. Amazing vibe with 1000s of people all pogoing. Cave In, Jupiter tour, Euclid Tavern (Cleveland) with the best Dazed and Confused cover, ever. Carcass tour I saw a couple years back. Absolutely amazing. Green Day, Dookie tour, outdoor venue, spring, senior year, perfect weather, and all my friends were there. Obituary, Cleveland Agora, early/mid 90s. Most brutal show I've ever attended, two broken legs in the pit that night. Page/Plant, early/mid 90s. Amazing show. I still hate Rusted Root (they opened) Then a bunch of local shows that I saw as a teenager; too many to list.