Go back and look.
If you read my previous post before 1430 hrs CDT today, then you were probably confused at the link in the middle, which I meant to link to a YouTube video of a pre-dawn launch of the penultimate flight of Space Shuttle Columbia. Instead, due the fact that I had taken a little Wikipedia safari, I had inserted a far less interesting link by accident. My bad.
But if you haven't seen it, go look at the short video of the launch, and watch it at least throught the SRB separation. Really. It's that good.