Add client-side dependency checking to Modules Administration page.
If you have ever been frustrated having to submit the Modules page multiple times to turn off a set of nested modules, this module is for you. When you click a checkbox to turn on a module, it also turns on all the modules it depends on. And when you turn off a module, it turns off all of the modules that depend on it.
Super simple, and on my list of things to try and get into Drupal 7.