Calculating Pi http://projectpi.sourceforge.net/
An open source endeavor for the calculation of this constant. Describes the project, the implemented algorithms for calculatinon and software downloads.
Pi Land http://www.eveandersson.com/pi/
Fun activities, a Pi trivia game and a Trainer for digit memorization. Pi poetry, artwork, and photography, calculations, digits and book reviews.
Bailey on Pi http://www.lbl.gov/wonder/bailey.html
Briefly explains David Bailey's work with NASA's supercomputers and the development of a workable formula to evaluate Pi for any number of decimal places.
Is Pi normal? http://pi314.at/math/normal.html
An article by Stan Wagon about the idea of normality, first introduced by E. Borel in 1909, is an attempt to formalize the notion of a real number being random.