This is a quick one…if you ever have multiple web parts on a single SharePoint website, and you want to manage or delete more than one at a time, or even just see which web parts were added to a website beyond the default content of the template, add the following (in bold) after the URL in the active window:

http://server/site/page.aspx?contents=1

This is cool!  Check the boxes of the ones you want to delete/manage, etc.  Enjoy!