If you haven't been able to attend DrupalCon Paris, or missed the session I led on Views for developers there, you can find its first part on archive.org:

In case you've found Jeff Miccolis' post about the Extendr module for Flickr great, but have been bothered by the fact that the link on the blog was broken and that comments on that article were closed, the good news is that he made his code available on drupal.org too, at:

http://devseed.svn.cvsdude.com/sandbox/drupal-6/extendr/