Building Map Directions module for drupal with Google Map Directions API is easy. Actually this module is far for complete but usable :). Using Google Map Panoramio libraries to add Panoramio layer over map direction is interesting. You can see public photos along with map direction. Also enable other layer like traffic and bicycling layer for supported area. In the future I would like to integrate Google Map Places libraries for easy place searching.
Building drupal Flickr gallery really simple with Flickr API module. Flickr API it's self build based on phpflickr library. As API, Flickr API module provide all Flickr API function to interact with other module. If you want to build new module based on Flickr this module is the right choice . Just finished building module based on Flickr API.
Like the project page says Drush is a command line shell and scripting interface for Drupal, a veritable Swiss Army knife designed to make life easier for those of us who spend some of our working hours hacking away at the command prompt. Very cool stuff :).
