Learning Chinese - Chinese Practice

A great free software to learn Chinese with.

Can be downloaded from:
http://chinese.yuehan.net/

It has Chinese talking dictionary.
Also, what it calls 'reader' - which is a tool which can read out loud Chinese text that is pasted or imported into it. The reader also linked to the dictionary such that when cursor is placed at any text, the dictionary meaning is also displayed in a separate window.

New 'Toy' on My PC - Celestia

Try
http://www.shatters.net/celestia/

It's a cool toy to have.
Eg. Let's you roam the solar system to look at the planets and their moons. A little like Google Earth but for the solar system (and actually beyond).