Informative links on watch collecting:
TimeZone.com  A very thorough resource for the watch collector. Contains watch discussion forums, a watch school, and watch reviews.
Watchforum.com  A community of watch and pen enthusiasts from around the world! WatchForum is a proudly non-commercial site.
Equation Of Time.com  An excellent resource for watch collectors. Contains discussion forums and definitions and more.
The Zenith Forum  A message board about ZENITH watches or ZENITH related items. Go here for discussion on "El Primero" Chronographe.
WatchZone.net  The World's Watch Information Resource. - Forums, discussions, and more.

Informative links on time and time technology:
National Institutes of Standards and Time  A very thorough resource for standards and technology and  time synchronization.
Time_and_Date.com's full world clock  This web-site has world timezones that are adjusted for daylight savings time. It also contains discussions about daylight savings time  and when certain locations start and stop DST. Very informative site.
Use this link for synchronizing your wristwatch. U.S. Naval Observatory World Time Clock.
Use this link for setting the moon phase on your wristwatch correctly. U.S. Naval Observatory Moon Phase data.

Links to companies that make the watches that I own:

                                                           

                              

                           

                     Seiko                                  Orient 

Some of my favorite watch companies:

Watch magazine web-sites where you can learn more about collecting:
International Wristwatch Magazine IWW
hr:WATCH Magazine Fine watches and unique timepieces.
In Sync...for the time of your life. Watch magazine.