Jamie3D.com

Links

Turbosquid - 3D models, wide variety, based in The United States
Falling Pixel - 3D Models, newcomer, based in The United Kingdom.
3D02 - 3D Models, mostly great cars, based in Thailand.
MikeSmith3D - I met Mike at college and he's a great Maya and Z-Brush modeler / texture artist.
Michael Welters Cinema4D Web page - A great Cinema 4D Plug in Creator's web page.
Brandon Hall's 3D Gallery - A Fellow Cinema 4D Artist's Homepage.
SIXTYSEVEN - A Fellow Cinema 4D Artist's Homepage.

Life in Vector - The Portfolio of Brooke Nuñez, a very talented commercial illustrator and designer. Be sure to see her gradient meshes.
Vexels.net - A community site showcasing "vexels" or Illustrations created entirely with layered shapes having only solid colors. A very interesting look at illustration techniques.

Sloppy - A very neat Java based program that is used to deliberately slow down your connection speed. This is great for web designers who would like to see what kinds of speeds a 56K or 128K etc. user would experience if they visited his / her page.
Highslide JS - One of the best JavaScript based content viewers for the web. It can be seen in action on this site in the image galleries and video viewer. It's free for personal use, and very affordable for use on a commercial project.