Thanks @dsurrao! I added my vote, but I think there should be a confirmation question before everything gets deleted because no one would want to accidentally reset a dataset! 
BTW, what if one wants to delete the values of more than one dataset? For example, lets say I want to delete the values in datasets for July and August and only for specific OUs, but the question is are users really going to need this, right? On the other hand, the reset for one dataset is simple and can become handy so I agree with you @dsurrao! (: