I know it's off topic, so may be moved to General or Everything Else maybe, but...
I had a similar idea - I was thinking about how to set it up.
If you have a look here
www.bankactiongroup.co.uk - there is a dummy table (the second in the middle section) - in it there is a column for the amount of time it has taken a particular bank to comply with the Data Protection Act.
Do you think this would be a good idea? Any idea how I can get this information - I was thinking of making a small form to fill in, but this would require a lits of ALL banks (or maybe just the major ones) - not sure, ideas on a postcard please...