Here is a list of several different sites.  If you have any that aren't listed, e-mail me.

The Connecticut Robotics Society: a great robotics club which I  belong to.

Motorola's SPS Site:  Motorola Semiconductor Products Center.  Motorola is the maker of the wonderful 68HC11 8-bit microcontroller

Zorin:  A company in Seattle that sells the HC811E2 micro. and other boards.

The Trinity College Fire Fighting Home Robot Contest:  A great contest were the objective is to build a fully autonomous (no remote control, but can be dead-reckoning) robot that can explore a maze (a model house floor), find a candle and put it out.

Mondo-Tronics:  Mondo-Tronics (also known as the robot store) has several    different kits, etc. for robotics.  I got the base for my Rug Warior here and a few sensors for D.E.A.R.2.

Technological Arts:  Technological Arts is a company in Canada that sells a  wonderful family of boards, that use the HC11, called ADAPT-11.  This board I used on Gandalf.

RS&T:  A great magazine on true robots.

Karl Lunt:  Karl Lunt has lots of info on HC11's, HC12's and also has PCBUG11a which is a modified version of PCBUG11 yet runs on faster computers (and is still free to download).

Mouser:  Mouser is a company that sells tons of electronic parts for dirt cheap.  There is also no min. order.

Tower Hobbies:  This company sells remote airplanes, cars, etc. but they also sell individual parts such as servo motors, tires, and several others that can be used on a robot.

Acroname:  This company sell several useful parts including the Sharp GP2D12 IR detector used on Gandalf.

Mr. Robot:  Distributes robot kits, parts, and other stuff.

Rick's Page:  Homepage for Rick.  He sells a Basic-X controller board which he made.

Bill Ruehl's Web Site: Bill Ruehl has a whole lot of great info on robotics, hardware hacks, micros., etc.

The HERO Web Source:  All the info you need on Heathkit's HERO Jr., HERO 1, & HERO 2000 robots!

AMS: This company manufactures 68HC11 and 68HC12 based Tutor boards.             

NePARS: Another excelent robotics club located in PA.              (*NEW*)

Circuit Cellar: A very good magazine with articles about computers, software, and other very interesting stuff!                                                          (*NEW*)

Nut's & Volts: Another good magazine with articles about robotics, micros, electronics, etc.                                                                                      (*NEW*)