Some links of interest to everyone:

• Mathematical Moments from the American Mathematical Society
• Mathematics and the Ocean
• Math Awareness Topics

Mathematics and Art:

• Math Awareness: Art
• Mathematical Imagery
• Helaman Ferguson, Mathematical Sculptor
• Mathematics and Origami
• More Mathematics and Origami

Some links of interest from the American Mathematical Society:

• Mathweb, math on the web
• General Information, promoting public awareness
• Feature Column, monthly essays on mathematical topics

Java Applets:

• from Paul Garrett at the University of Minnesota
• MSTE at the University of Illinois at Urbana - Champaign