Have you ever watched a space shuttle launch before?
You can watch on YouTube, this video by NASAtelevision of Atlantis STS-129 launch to the International Space Station. You see the countdown, launch, and solid rocket booster separation. You also get commentary on what exactly is happening as well as hearing the crew in the shuttle and controllers.
The commentator gives interesting facts and explanation (providing stats on the shuttle speed and time of the flight)