www.neoformix.com/Projects/TwitterVenn/view.php

The Twitter Venn applet allows you to enter 2 or 3 search terms and searches Twitter for matches, then presents the results as a venn diagram, which illustrates the rate of tweets containing the search terms in the various combinations.

http://www.neoformix.com/Projects/TwitterVenn/view.php

koolpianoz.com

This applet allows you to play the piano and will accompany you on different predefined songs.

Needs Java 6 to run properly.

http://koolpianoz.com/