Flickroom - browse Flickr with an Adobe touch

Flickroom is an Adobe AIR based application that provides the rich browsing experience Flickr users have long deserved. The dark theme ensures that your photographs look better than ever before!

You can now receive instant notifications for any activity on your photostream, upload photos by just drag-and-drop, add comments, mark faves, add notes, tweet about your photos and also chat with other Flickroom users.

http://www.flickroom.org/beta/

It's sometimes a bit buggy (it's still beta), but I like it a lot...

seems cool
I will try
there is also flickriver that does not require any installation for your visotr sand that allow to see your photos on a blakc bacground like a river of photos
see e.g.
http://www.flickriver.com/photos/alhadeff/