This section contains some links that I like.

Cool Stuff:

Virtual Barber Shop - A really cool demonstration of binaural localization (the way that our brain calculates where sounds are coming from). Give it a listen with headphones.

Free programs:

Firefox - A very good web browser (a replacement for Internet Explorer) that is extensible, customizable, and compatible with most of the latest web standards.
Foxit Reader - A wonderful lightweight PDF reader. Opens fast and makes a great replacement for Adobe Acrobat Reader.

Music:

OverClocked Remix - Features over a thousand different remixes of video game music, covering genres from hardcore to baroque. The best part? It's all free!
Remix: ThaSauce - This website features a more informal selection of video game remixes.