If you want to just see the shuttle, start around 53 seconds. The camera gets a little shaky since I was taking pictures and filming at the same time. No one knew exactly where the shuttle was going to appear so around 53 seconds you can hear people shouting and pointing "there! there!"
If you want a really good video, go to youtube and type in Atlantis shuttle launch May 14 - there were some good videos posted from people who were on the causeway and had better camera lenses. I personally like this one:
