I'm glad you're coming round to Arcade Fire! Their first album, Funeral, is really excellent as well. And if you really want to be blown away check out this Spike Jonze directed video (http://www.youtube.com/watch?v=5Euj9f3gdyM) for The Suburbs. Apparently it's taken from a short film Jonze and the band have done together but even on its own it haunted me for weeks.