(in no particular order)

My other Dr. Who related Website

Doctor Who Reconstructions

Loose Cannon Reconstructions

Earthbound Timelords: The Doctor Who Scripts Project

Doctor Who's Tragical History Tour

Doctor Who Image Archive

Who Link @ Who's Doctor Who

Doctor Who DVD Now

Doctor Who: The Regenerative Site

Doctor Who Bloopers List

WhoFind

The Four Doctors

Howe's Who