Theme Park Fanatics
American Coaster Enthusiasts (ACE)
These people eat, sleep and breathe roller coasters. They also organize some great trips and wrangle some ERT (that's exclusive ride time) on new and classic coasters for their members.
American Carousel Society
This group's aim is to preserve the few remaining operating "Golden-Age" carousels.
The Coaster Enthusiasts of Canada
Very informative, info-packed site. Join the organization and check out its annual "Scare-Me" tour.
Daffy Klub-- Darkride and Funhouse Enthusiasts
These Daffy (that's a play on the org's acronym: DAFE) folks have a ton of feature articles and info pages about dark rides and fun houses. You can also learn how to join the organization and read about the its projects and awards.
The Dark Ride and Funhouse Historical Society
If roller coasters and carousels have their boosters, why not dark rides? Why, indeed. Check out this site's loving ode to classic dark rides.
The National Amusement Park Historical Association (NAPHA)
An educational and enthusiasts' organization dedicated to all aspects of amusement parks, past and present.
Do you want to know what the next big thing will be at your favorite amusement park or theme park? Nobody does a better job of revealing coasters, sneaking peeks at attractions in progress and sniffing out industry rumors across the globe than Lance Hart at his Screamscape site.
Florida Coaster Club
Florida, the theme park capital of the world, is quickly gaining a reputation for its coasters as well. Members of the Florida Coaster Club tour parks inside the Sunshine State and beyond, take coaster construction tours, participate in TV productions, and enjoy other coaster pursuits. Read about the club's exploits and learn how to join the fun (you don't have to be from Florida) at its site.
Large site for thrill ride enthusiasts. Includes active forums, news, chat, and a separate section for roller coaster video games.