Robotics Online- Excellent resource for all your robotics needs
Hobby CNC and stepper systems
Rapid Prototyping
Alphaprototypes.com- Alpha Prototypes provides Rapid Prototypes created from 3D Cad drawings. Including Stereolithography, FDM and 3D Printing; Online quotes available.
Books, CDs and other leaning /educational material
Tooling and work holding systems
Americanmachinist.com American Machinist provides useful information regarding router bits, carbide drill bits, plasma cutting and many other cutting tools.