Even though im not that big of a fan, i regret not seeing Muse at a festival the year before last. They were headlining the first night but unfortunatly i had drank quite a lot and passed out, something i'm not very proud of
I also had the chance to see The Chemical Brothers last year at another festival but i was dragged to see The Raconteurs instead.
I also missed Sigur Ros at a festival another year because they were on at the same time as Rodrigo Y Gabriella and i hadn't quite got into Sigur Ros at that point so i went with my friends to see Rodrigo Y Gabriella, who were still amazing.