5: Miro - Open Source Internet TV - A little rough around the edges. Think of it as an unrestricted iTunes for video.

4: HandBrake - Open Source DVD conversion -  "Backup" your DVDs to AVI or MPEG 4 and watch them on almost any media device. I just watched the Godfather trilogy on my phone.

3: Bean - Really Nice Word Processor  - Rid Microsoft Word from your life forever.

2: Gimp - Image Editing - Save yourself a fortune by not purchasing Photoshop. Or a lot of hassle by not stealing it.

1: Copernicus - Image Grab - Grab anything you like (including video).

http://ecofoot.org/ - Check your eco footprint.
http://www.etsy.com/ - Buying & selling really nice stuff.
http://www.webmd.com/default.htm - Scary self diagnostics.
http://www.expertvillage.com/ - Learn how to do anything.
http://www.blinkx.com/ - Big ass video search portal.