Despite being Canadian, I watched the opening ceremony on my NBC HD feed, as opposed to the CTV HD feed (mostly I wanted to hear a different take on the games, and on Canada in general). My feed was actually very quiet--commercials included. It was about 10 notches quieter on my Denon reciever than the CTV feed, which *was* crazy loud.
As an aside, NBC has put together some very nice and touching pieces on Canada, the games, and the athletes. Good show!