re: did you know Douglas Adams wrote some episodes?
Yes and Monty Python:
http://www.imdb.com/name/nm0010930/
http://www.floor42.com/Other_Projects/Doctor_Who/
http://www.zootle.net/afda/faq/b.shtml
In particular, one plot element of the last Dr. Who story he wrote got
into Dirk Gently's Holistic Detective Agency about life on Earth getting
its start thanks to the explosion of a visiting alien spaceship.
