The introduction to Octavarium, as it is on the album, is fine. No problem with it whatsoever.
The introduction to Octavarium on Score, however, is wanky, over-the-top, boring, arbitrarily drawn out, frequently amelodic, and basically just a big waste of space. I'm just glad iTunes has a feature where you can choose the start time (I find a little over five minutes in to work just fine), because seriously, what the fuck.
But yeah, on the actual album, it's OK in my book.