The next contact juggling Convention will be held in Rennes, France this May. More details can be found here (pdf).
For a look back at the past conventions, check these video links:
CJC 2001 & 2002 (First ever CJC, held in the US)
CJC 2003 (Perth, Scotland) Video by Silver Paul. You must be a member at contactjuggling.org to download the video
CJC 2005 (at the Hangar, London. Featured on the In Isolation DVD)
and now CJC 2007 – France.