Cool Puzzle Links

Here are some other people who collect puzzles:
A guy with lots of puzzle pictures
The puzzle box guy
Puzzle Mist
Another puzzle collector
Gisela's Brain Teasers

Here are some fun online puzzle sites:
Fun Visual Tricks & Optical Illusions
IQ test
Online jigsaw puzzles
Online Jigsaw Puzzles
Puzzle contests
Solutions to puzzles (puzzle solver)
Solutions to puzzles (usenet)_
Solutions - help solving sequential movement puzzles
Ultimate puzzle site
Word & crossword puzzles

Here are some puzzle manufacturers and re-sellers with web sites:
Crafty Puzzle Company
Cubic Dissection
Dilemma Games
Frik-n-Frak's Curio Shack
Leonid Mochalov's puzzles
Livewire puzzles
Puzzle & Craft Factory
Puzzle Master
Sequential movement puzzles, original designer
Sloyd Web Shop
Unique Handcrafted Wooden Puzzle Boxes & Engraving Services
Wood puzzles, original designer

Here's a puzzle blog site:
Passion For Puzzles

Here is a list of all the manufacturers of puzzles that I know about, with some information about each one.