Wikipedia is a huge online Encyclopedia, the above link displays a list of famous people who are believed to have suffered from some form of bipolar.
http://www.ntdf.co.uk/
Additional Links
An charity that supports and raises awareness for all mental illnesses.
A list of books related to bipolar.
A support site for people who suffer from a mental illness.
A site created and maintained by a bipolar sufferer.
A research site.
The great mans bipolar related forum.
A mental illness charity.
A research site.
A printable paper style mood diary.
An NHS campaign
Research on memory loss