Just interested to find out what reports other advertisers run, either on a daily, weekly or monthly basis. Also - why do you run these reports? What information from these reports is important to you and what do you tweak based on this information?
The standard reports that I run for clients are: The Search Query Report - To find negative keywords and also to include keywords which are triggering the ads (from the Broad match type). The Placement Report - To see what websites are converting and which ones are not. You can then target or exclude these websites to make better use of your budget. The Demographic Report (If the client uses Demographic settings) - To make sure that the correct type of people are being targetted, but you really need the conversion tracking code installed to determine this.
Search Query is always a good one - you should also check out the Google Analytics exact bid term filters. This will show you the exact query typed in for paid search clicks coming through to Analytics (as I'm sure everyone knows the keyword shown in Analytics is just the term you are bidding on not the actual search term). Great resource for expanding out your keywords & negatives.