A few interesting Flickr apps

Retrievr: Just doodle a simple sketch, and it will display similar images from Flickr, which is a great helper for finding pictures. Although it's not particularly accurate yet, it's quite interesting.

Spell with Flickr: Input the words you want, and it will find pictures of the corresponding letters from Flickr, along with providing a segment of HTML code.

Clockr: A Flash clock composed of numeric images found from Flickr.