1. XCruiser, formerly known as XCruise, is a filesystem visualization utility. It constructs a virtually 3-D formed universe from a directory tree and allows you to "cruise" within a visualized filesystem.
http://xcruiser.sourceforge.net/

2. Chlastmeter is a simple program written in python/tkinter, that (acording to given list of drinks) displays the amount of alcohol in blood as a function of time.
http://melkor.dnp.fmph.uniba.sk/~garabik/chlastmeter.html
(slovaci za nezapru)

3. komu je smutno za zimou: http://www.euronet.nl/~rja/Xsnow/