Amateur Radio

ARRL http://www.arrl.org// The central organization behind the Ham radio hobby. This site is loaded with useful information for would-be hams as well as seasoned veterans. Just about everything you need to know.

Eham http://www.eham.net/ A ton of useful information about Ham news, Ham equipment reviews, classified ads, and thousands of subjects of interest to radio amateurs.

Mods DK http://www.mods.dk/ This European site offers free ham equipment manuals, the largest collection of free manuals on the web. Has equipment modifications, diagrams, pictures, etc., this is one of those sites you'll visit a lot.

QRZ http://www.qrz.com/ Another Ham site loaded with useful and necessary information. You can find forums, classified ads for ham equipment, practice tests for becoming a ham with all the questions and answers, news, etc.

Rig Pix http://www.rigpix.com/ This has a large collection of ham equipment pictures with other info as to what bands they cover, the output, when made, etc. Another site you'll visit often, lots of valuable information.

Aviation

AOPA http://www.aopa.org/ The AOPA is the leading  organization in aviation, this site is filled with really up-to-date information on just about every aviation subject.

EAA http://eaa.org/ This is the "Homebuilders" organization for people interested in building their own airplane, it has everything you need to know to get started.

FAA http://www.faa.gov/pilots/safety/pilotsafetybrochures/media/sunglasses.pdf . Brochure on pilots sunglasses.

Sunglasses 

 Bolle (Bushnell) http://www.bolle.com/main/ Made famous by their nylon frames for skiing.

FAA http://www.faa.gov/pilots/safety/pilotsafetybrochures/media/sunglasses.pdf . Brochure on pilots sunglasses.

Ray-Ban (Luxoticca) http://www.ray-ban.com/USA/ Probably the best known brand, their site is not easy to use, good luck.

REVO (Luxoticca) http://www.revo.com/ These glasses are a result of the research done in the space program years ago.

Serengeti (Bushnell) http://www.serengetieyewear.com/index_en_na.cfm This is one of the best brands out there, a really first class product.

Watches 

 Luminox Watches http://www.luminox.com/launch> Popular and well made rugged outdoor watches that feature Traser dials and hands. Used by the Navy Seal and a lot of the armed forces for night use.

Knives 

Boker http://www.boker.de/us/ Originally most of their knives were made in Germany, many still are. A first-class product. Many are still hand made, a lot of collector items also.