Useful Nikon links

My favorite, from the Nikon Japanese website:
The History of Nikon Cameras
The Thousand and One Nights

Nikon lens info:

Photography in Malaysia. Great coverage and detailed info. There you can find useful information about almost all bodies, lenses and accessaries that Nikon ever made.

Nikon Lenses Database. A very useful site if you want to get info on an old Nikkor lens. For exaple, you can find out through the serial number in which year a lens is made. Combined with the above Malaysia site, this can give you a good guide when buying an used Nikkor lens.

Nikon F-mount index by Lars Holst Hansen and Rick Housh.

Lens reviews:

Reviews of Nikon lenses by some pros :
Bjorn Roslett Nikon lens review.
David Ruether Nikon lens review.
Thom Hogan lens review.
momentcorp
(I know there are a lot out there, but you really don't need to read too much. In fact, there is even a guy named Ken who basically says every Nikkor lens is a good one, which might be true. It really about figuring out your specific need.)

If you like to see some lens tests and MTF curves:

www.photozone.de
www.photodo.com

Finally, http://www.nikonlinks.com/ have more links to interesting Nikon sites, but sometimes more is less. For example, of course, google have all useful Nikon links, but that might not help too much.