Demon of the Fall is a fan favorite but its one of the last songs I'd want to hear live because it loses so much from the studio version. Mike does a damn good job but he's never going to be able to get the perfectly demonic tone he gets on the record. Plus, there's two sets of chord progressions under the 2nd riff, and Per's keyboards sound good but they make one riff dominate the other so that it sounds completely different. Also, the looooooooong pause between "with the greeeeeeeeeey" and the acoustic riff...
Last time we saw Opeth my friend had to get home but I said "zomg not before Demon of the Fall" or something like that, but once I heard it...we left 3 minutes in.