And Now, the Real Thing
http://books.guardian.co.uk/print/0,3858,4445609-110738,00.html
Stephen Moss' biography of Tom Stoppard is well-written and entertaining. It includes an overview of his life and works, in addition to anecdotes and excerpts from previous interviews.
The New York Review of Books: Pragmatic Theatre
http://www.nybooks.com/articles/390
An essay by Tom Stoppard drawn from a speech given at the New York Public Library. It includes topics such as the control over information given to the audience, the editing process, and the importance of theater to art in general.
Stoppard in Love
http://www.sfgate.com/cgi-bin/article.cgi?file=/examiner/archive/1999/02/14/STYLE14438.dtl
An article discussing Stoppard's and director Marc Norman's Shakespeare in Love.
Reviews: Rosencrantz and Guildenstern Are Dead
http://rogerebert.suntimes.com/apps/pbcs.dll/article?AID=/19910315/REVIEWS/103150304/1023
Roger Ebert's review of the movie version of Rosencrantz and Guildenstern are Dead.
Hamlet Online
http://www.tk421.net/hamlet/hamlet.html
A comprehensive resource on Shakespeare's Hamlet.
Six Characters in Search of an Author, L Pirandello, 1921
http://www.eldritchpress.org/lp/six.htm
A link to the full-text version of Luigi Pirandello's play, often cited as a significant precursor to Stoppard's Rosencrantz and Guildenstern are Dead.
Hamlet Haven
http://www.hamlethaven.com/haven.html
An online, annotated bibliography of Shakespeare's Hamlet.
