...at the super geeky powers of the Drupal developer community. I've been playing with modules over the last couple of days trying to find the right combination to create a multimedia sharing site for work that even the octogenarian residents of Greater Bluffelson could use.
Of course we've created (and by 'we' I mean mostly Randy) a bunch of custom stuff too. The more I use it, the more I like about it. There's a huge base of code, and the core software makes it easy to implement new features without starting from scratch.
Obligatory Flickr example:
[flickr:56/119630321/b582235ef9|center|500|1000]