What type of stats do the rest fo you collect on a regular basis?

As of right now im currently working on several types of stats..

Sponsor Related:

Hits
Uniques
Ad Impressions
Clicks
Sales
Ratio

Resource Related

Hits
Uniques
Ad Impressions
Clicks
Sales
Ratio

Banner / Button Exchange Related

Impressions
Clicks
Ratio

Once all of this data has been collected it will all be merged into a spreadsheet we keep on the office wall so we can see how well we are doing traffic wise over the previous fw months.

So what stats do the rest of you keep to hand?

Regards,

Lee