Mahadev Konar of Yahoo! presenting ZooKeeper at ApacheCon 2009 Hadoop Meetup
A brief overview of ZooKeeper and BookKeeper Apachecon_2009.ppt
Henry Robinson of Cloudera presenting ZooKeeper at ApacheCon 2009 Hadoop Meetup
ZooKeeper Futures (3.3.0) slides
Yahoo Tech Talk
This talk was geared towards developers that may use ZooKeeper. It's long, 1 hour, and has some examples with code.
ZooKeeper video from Hadoop summit 2008
Henry Robinson of Cloudera presenting ZooKeeper to UK HUG
http://skillsmatter.com/podcast/ajax-ria/zookeeper-the-state-of-the-zoo
Talk at Hadoop Summit 2009
This talk has a high level overview of ZooKeeper and the current status of ZooKeeper.
Hadoop Summit
This is a shorter version of the Yahoo Tech Talk. Code examples had to be skipped.
Talk on ZooKeeper internals
another internals talk that talks about how the code is structured: zookeeper-protocol.pdf
Talk at UPC (Universidad Politécnica de Catalunya)
This talk has more of an academic flavor, and it was given first at UPC.