Allscifi Star Trek Spotlight
Critical commentary from the original series, such as what the Horta does for single parenting and how Vulcans keep their women in line with finger foreplay.

Captain James Cook and Capt. James Kirk
Explores similarities between Captain James Kirk of and Captain James Cook of the Endeavour.

Eric's Excrutiatingly Detailed Plot Summaries
Extremely detailed plot summaries and trivia from each episode of the series.

IMDb
Plot and cast information.

Minnie's Salute to Star Trek
Tribute site that includes a salute to Gene Roddenberry, photographs and articles about the author's convention experiences, and includes jokes, quotes, and links.

The Original Series IZAN Page
Includes a humorous look at how Spock isn't logical and a look at several races from the series.

Original Trek
Episode guide with airdates and credits, maps of the known galaxy (ca. 2260), organizational chart of Star Fleet, the Articles of Federation, and text of peace treaties between the Federation and the Romulans and the Klingons.

Quotes from Mr. Spock
A picture of Spock with a quote. Clicking on Spock's picture changes the shown quote.

Sarek and Amanda's Pictures and Links
Pictures, stories and links about Sarek and Amanda from the series.

SciFi.com
The Sci-Fi channel's Star Trek page. Includes articles, an episode schedule, and information about the cast.

Star Trek
Includes information about the original cast, sounds, trivia, and reviews.

Star Trek - The Original Series (TOS)
Image gallery, sound clips, trailers, trivia, and Flash animations.

Star Trek And The New Myth Of The Machine
Philosophical essays about Star Trek.

The Star Trek Collection
Includes a database of information, episode guides, downloads, and a picture gallery.

Star Trek, Scifi, and Fantasy
Enterprise description and TOS character biographical information from 1969 making of Star Trek.

Star Trek Services
Includes pictures, sounds, news, links, and other information.

Star Trek Sound WAVs
Sound files from the series organized by episode.

Star Trek: The Lost Voyage of the Enterprise
A review of the 1994 Star Trek play in London.

Star Trek: The Original Series
Includes picture galleries, sounds, book reviews, and links.

Top 10 Star Trek TOS Annoyances
A humorous listing of the top ten TOS peeves.

TOS Sights and Sounds
Includes images and sounds.

Trek Bits
Episode reviews, video captures, and downloads, including sounds, fonts, and wallpapers.

Ben's Star Trek Site
Animated GIFs, sound files, and pictures.