I practice Shinto Muso Ryu Jodo (an old Japanese martial art of fighting with a stick). Visit our pages for general info about this martial art and possibility to train it in Prague.
During my stay in Vancouver, there was no opportunity to practice jodo (except alone), so I started learning kendo in Sunrise club (now appears to be defunct, as unfortunately the main instructor passed away), to keep myself in shape.
I also used to play go, eventually getting to roughly 1 kyu strength before I decided to stop due to time constraints. You can still ask me to have a game with you, though ☺. I recommend the go club at Czech-Japanese society and the KGS internet server.