For those of you who ever wondered what it would be like to ride the second stage separation rocket into space with a space shuttle, do a few loops through space, then come back through the atmosphere, then crash into the ocean, this is the video for you.
For all others, probably the coolest launch footage I have ever seen...
http://mfile.akamai.com/18566/wmv/etouchsyst2.download.akamai.com/18355/wm.nasa-global/sts-121/right_aft_srb_camera.asx