If your in Rotterdam at the moment, get down to the Graffiti Research Lab's most recent offering. I got to see a sneak peak while I was at Eyebeam in New York a few weeks ago and I'm really pleased to see it working so well at its current venue, the 'KPN building' which incidentally was designed by Renzo Piano. Saturday 10th (tomorrow) is its last showing so if you can make it, be there for around 2200 hours.

KPN Telecom Building
Wilhelminakade 123
Rotterdam