Humboldt Universität zu Berlin
The University I visited in an exchange program and the Theatre Studies Department.
Rough Guide Berlin
Berlin's Time Out
The Love Parade
Baustelle Potsdamer Platz
Berlin is Under Construction at the moment. At the to biggest construction sites there are camera's making pictures three times a day and sending them directly onto the net.
This is the site of the Serb radio station, which uses the internet to dodge Karazic's anti-free-press laws. Take note. See also the Wired piece on this matter.
NRC Handelsblad De Volkskrant
Two good newspaper-sites. Dutch only though
De Groene Amsterdammer
Hubble Space Telescope
Live from Outer Space images
Many computer-music links.
Ditto for Midi.
The Internet Movie DataBase; the biggest of its kind.
Last but not least, I'm working on the website of the Theatre Studies Department in Amsterdam, together with the aforementioned LmR. The site is already online, but for updates in progress click here.