CoolSites
This is supposed to be a list of cool ways of using existing data or perhaps ways of using data that you didn't know exist.
For instance I only just discovered http://backstage.bbc.co.uk/
Traffic bits
Google Maps + backstage.bbc.co.uk
http://www.dynamite.co.uk/local/ - traffic + train info
http://gtraffic.info/ - traffic info
TV
Search
http://dmoz.org - Open Directory project. Each site listed has been vetted appropriately.