Garr Reynolds is the author of Presentation Zen a brilliant book on presentations and visual design. If you write or create presentations you should read this now. PLEASE.
Garr is based in Japan and his posterous blog is a fascinating stream of visuals from Japan and around the world. I highly recommend subscribing to the posterous blog or following Garr on Twitter.
His main blog Presentation Zen is also a great read with more in depth articles on presentation style and visual design.