I haven't seen the video yet, but these guys are very cool. Watching them talk about Master of Puppets or Holy Wars was like hearing the song for the first time all over again. It's great that these guys are open-minded enough to try different genres, especially something as tricky as Metropolis. However, that's not really a good DT entry level song. I'd have recommended Pull Me Under or As I Am, which are more straight-forward songs with less wankery. Even something like Endless Sacrifice or Sacrificed Songs, both of which build quite nicely before exploding in the the instrumental parts. But Metropolis is truly hard to get a grasp on, especially upon a first listen.