Virtual Linette
This program creates a little window containing a picture of my friend Linette. Every few seconds, or when you click the window, she makes a sound.
It's currently only available as a Windows executable but it does run under Wine on Linux.
Warning: It is very risky to download files of this type from the web and run them on your computer. Even if you trust me not upload a trojan-infested file, the server this site is running on may have been cracked by an ev1l h4x0r who could then have messed about with this file. So don't download it.
If you want to ignore the warning and download it anyway, the link is next.