Nicolas asked for a way to display flickr sets as a gallery in DokuWiki. But instead of playing with the flickr API I had an idea to add support for a whole bunch of services at once. The answer is called Media RSS and is an extension to the standard RSS format to embed media like images or video in a feed.
What I did, was to use the excellent SimplePie library1) to read any Media RSS feed, get the images from it and display them in the gallery. Of course you can use all the gallery plugin parameters with those images as well. Including the lightbox mode.
Here's an example of my latest mobile phone uploads at flickr.