Mount Sunapee Interactive Trail Map - a different version of a trail map; compare it to the previous applet. Also try out the Flash version, available on the same page. Why is Flash going away??
Mount Sunapee Webcam - not any old webcam! One the
user can control! (As an aside, why do they have a page telling us there's a page that has webcams?)
Discrete Mathematics Applets - a comprehensive list of many, many interactive applets for teaching mathematics and/or showing mathematical puzzles.