A very, very simple Flickr browser built with jQTouch. An example instance is running at http://atevansflickr.heroku.com/. Currently supports browsing recent images and search, and that's about it. Just an experiment to try combining a mobile web app framework, Sinatra, and experiment with the Flickr API. There are some bugs, mostly due to jQTouch issues -- in the future, I may make a similar application with another framework instead.
If you want to build a simple, flickr-based mobile interface, this may be a good starting point.