Add new attribute values within product edit screen
When editing or adding new products you may have wanted to select a manufacturer from the select list and the one you are looking for is not on the list. Damn, have to go to Catalog -> Attributes -> Manage attributes and add new value from there....
With this module installed you will never have to such thing since it allows to add new attribute value without leaving page very elegantly.
Works with every custom product attribute that has a type of select or multiselect.
See the video to see this module in action: