Danterra, I will say I am a little jealous - I just saw Iron Maiden my first time this past summer, and was totally blown away! Can't wait for the new album now too....
Other memorable shows I've been to, Virginfest** the past 2 years, Dream Theater, Queensryche, Rush, Plant + Krauss, Satriani (seeing him again next week ), Bauhaus, and others (like G3 ).
As for AC/DC, I am debating it - tickets start at around $100, and there are many other shows I want to see in the near future (Nine Inch Nails and Scars on Broadway, primarily).
** Notable bands that have been at Virginfest within the past two years (that I saw), just so no one needs to try to figure out what I may have seen there::
Girl Talk, Nine Inch Nails, Smashing Pumpkins, 311, Velvet Revolver, Beastie Boys, Ben
Harper and the Innocent Criminals, Gogol Bordello, Rodrigo Y Gabriela, Infected Mushroom, Foo Fighters, Iggy and the Stooges, Stone Temple Pilots, Sting and the Police, Bad Brains, Lupe Fiasco, and others that I am too out of it to remember currently. Fun times.