There is one of a F-18 here in Alaska during the an air show about 10-14 mph below the sound barrier, matter in fact, you can hear the sound in the video following the airplane, about 2-3 seconds later.
http://www.mrx7.com/broke7/Movies/soundbarrier.WMV
I just remember there was a few broken windows. The 2nd day of the show, that pass was significantly slower. I watched it both days.