Here are some links I've found useful

• Rickard's Electronic Projects Page
  A collection of interesting projects using a variety of controllers. Some good video information, although it's PAL-centric.
• Bruno Gavand's PIC PAL Video Library
  An inspirational page describing a PIC based PAL video system. Bruno's site is filled with all kinds of neat projects and an active forum.
• Bob Blick's Projects
  Bob has a useful collection of projects.
• Discover Circuits
  A large library of circuits.
• 4QD-TEC: Electronics Circuits Reference Archive
  Another large library of useful circuits.
• Linistepper Home Page
  A nice way to control stepper motors and the base from which I built my own version.
• Red Rock Energy Electronic Projects
  More good electronics information, especial solar power stuff.
• David Cook's Robot Room
  David has a wide ranging collection of projects. Plus his 'thinking about robots' picture at the top of his pages really sets the mood.