Windows:  http://www.anytvplayer.com/

“The free AnyTV streaming video player gives you access to dozens of internet media streams (television, radio, and other video) from one interface for easy viewing at your computer.”

Goobuntu + Ubuntu USB Install Guide

DOT.TUNES basically turns your Mac into a web server for streaming iTunes content across your local network or across the internet. The two new plugins optimize the interface for the iPhone and the iPod Touch. With either you get access to your playlists, artists, albums, etc.

The Unofficial Apple Weblog TUAW

“Using Drive-in you can create an image of a DVD disc on your laptop or home entertainment system. The image preserves the quality, navigation and special features of the original DVD and can be played using Apple’s DVD Player or Front Row.”

Flip4Mac Drive-in

Another method for Windows users to try Linux without removing their current OS.

Install Ubuntu from Windows in 3 Steps without Using a CD - With the help of Wubi - Softpedia

Windows does not always completely remove files even when you use add/remove programs.  Revo will let you completely remove programs you no longer want/need. It’s will also let you free up disk space by removing pre-installed program you don’t intend to use.

For Mac try Appdelete

45 Best Freeware Design Programs

Democracy Player rebranded Miro is a media hub application to download channels (rss fed video) similar to iTunes.  It’s free, open source and run on any platform you can pretty much run.  While it does have many popular podcasts it still has less content listed then iTunes podcast section.

Download Here

“This is an open source Remote PC access project, an alternative to subscription based sites like WebEx or Gotomypc.
ShowMyPC uses SSH port forwarding mechanism using Open Source SSH client plink and VNC Remote access software. Users can use their own middle SSH server or use our Hosting plans. No registration, no logins, all open and free. Read More.”

Simplify Media allows you to share (stream) to and from your iTunes library to/from whomever you want.

“Enjoy music from home while at work or school. Explore friends’ music while they are online”