At the time of writing this script, SQL Server doesn't store the date of the last ran DBCC CheckDB date in the catalog views and rather this information is stored in the error logs and in the boot page. Paul Randal showed us how to go and look for this information here.
A connect item is created and approved by MSFT to include this information in the catalog views. Until the, you can use this script to quickly identify the last ran DBCC checkDB date for all databases on an instance.
Acknowledgements: Aaron Alton, Ward Pond, Paul Randal, Jonathan Kehayias