http://news.bbc.co.uk/sport1/hi/olympics/athletics/7429745.stm
Video: http://www.youtube.com/watch?v=owfpwVN70MA
By far the best video of the race so far:
http://www.youtube.com/watch?v=2RNyq4ljw-M
It looks like he goes through 200m in about 21 seconds in his celebration.