All videos are now pushed to JavaZone talks
The JavaZone 2010 videos have been released and are available on http://streaming.java.no.
If you want to add them to iTunes - they're not available in the iTunes store - but you can add them easily by hand.
Grab the feed URL (http://streaming.java.no/tcs/rss.php) - head to iTunes, and choose advanced > subscribe to podcast and paste the feed in. Simple ;)