Yeah, interesting how everything in the clip suggest speed. The music, the quick cut, starship Enterprise hitting warp.

You can't judge how responsive it is based on the ad — Apple sometimes speeds up the performance of their apps/devices for commercials. This was especially obvious on the iPhone ads before the 3GS (and I believe they even added a small disclaimer on those ads). That said, everyone I've talked to who was at the launch event and actually tried it said it was very speedy.

It looks just as swift and responsive if you turn the sound off. And for those of us who have used iPhones, that's pretty damn swift and responsive.

Well it's not the first time I've heard that. A few people posting video reviews (earlier when they got to handle it) also commented on the speed.

Don't know about the music, but the quick cuts do. Especially in the first 30 seconds.