Found a great website with photos from not only Berlin, but from the wall in its entirity running through Germany. The saddest are of course all those people who lost their lives trying to escape to freedom. The labels are in German, but you can click through them or go to names you know, like Potsdam, Brandenburger Tor, etc.
http://www.ritter-barum.de/projekte/grenze/sub.php
This is a good year to go to Berlin as they are celebrating the 20 year fall of the wall. Here are all of those events. This time in English.
http://www.mauerfall09.de/en/calendar/article/132/year/2009/month/2/