http://blip.tv/file/get/Add1sun-ApplyingPatchesToCoreDrupal626.movAnother in the quick and dirty series that shows how to use the command line to apply, reverse and test a patch for Drupal core. Anyone, even folks with no coding experience at all, can help test patches. The video is available in .mov and .mp4 formats and is 12 minutes in length. For more info on applying patches make sure to read the Patches section of the handbook.