Since I met Pedro Mari (EA2JO), I have not stopped working all competitions as I could. I started with him to learn how everything worked in 1991, we passed in the shack two weekends then took the International Visual Communications Association IVCA. This contest was for many years to follow the reference world, I was lucky to be able to help EA2JO from 1991 to 1997

Several years I have participated in this competition held in early May by colleagues OZ9KE, OZ9AU and his group from Denmark, for several years without activating it, I do encourage them because it was well known and the stations are pretty together, but if no, I just want to wish him well and thank the unforgettable moments that I spent with them.
http://www.oz6sstv.dk

Probably this is the most important European competition in the history of SSTV with more than 25 years in active. Held every third weekend of March from 12:00 UTC Saturday to 12:00 UTC on Sunday. 
For more information visit http://www.darc.de/referate/ukw-funksport/

JASTA (Japanese Amateur SSTV Association). I would like to make special mention of this contest that lasts the entire month of August, yes, you heard right, lasts the entire month of August! I want to congratulate all the winners but also those who have been competing closely. I have never competed in this competition because this is my month of vacation but do not rule out a future. The manager is JA2HYD and all information regarding this event can be found by visiting the http://homepage3.nifty.com/jasta/

                           Nishi Nippon Visual Communication Group

Este concurso se celebraba durante dos fines de semana de Abril pero este año 2009 durará 9 días desde el 11 hasta el 20 de Julio y desde las 0:00H UTC hasta las 24:00H UTC. El presidente de esta asociación es JA6AP, Kiyotada Shimizu. Para más información visita la web. http://www.tim.hi-ho.ne.jp/ja6ap/english/conrule11.html

The competition was held over two weekends in April 2009 but this year will last 9 days from 11 until July 20 and from 0:00 UTC until 24:00 UTC. The president of this association is JA6AP, Kiyoto Shimizu. For more information visit the website.
http://www.tim.hi-ho.ne.jp/ja6ap/english/conrule11.htmll

There are other contests such as those organized by US8AR from Ukraine. I participated in 2002 remained in second position behind Nils, SM5EEP. For more information visit the website. http://www.qsl.net/us8ar/
I think this competition is not active in recent years.