This is a link to a video we took of the parade on Saturday night, March 12, 2011.  The parade started at 11 pm and lasted until around 130 am.  These are not unusual hours in Spain!

There were numerous groups of dancers.  We filmed a few.  Unfortunately the film conditions were not great so there are light streaks visible.  Also the sound from one group sometime overwhelmed the sound from the one being filmed.

http://www.youtube.com/watch?v=achz7EQAgtchis