Some of my favorite CAD related websites out there:
mcadcentral - forum for CAD Q&A
linkedin - business social networking (facebook for business people)
SMUG - South West Michigan User Group
design-engine - "high-impact courses for 3D Professionals"
proe-warsztat - Pro/ENGINEER site from Jacek Mydlikowski
e-cognition - video tip of the month from Leo Greene
proesite - Olaf Corten's Pro/ENGINEER site
