Extras: Full frame, interactive trivia games, chapters (if you can't find these in stores, go to www.shop.tvguide.com).

• "Star Trek: The Original Season: The Complete Second Season" (Paramount, 1967-68, not rated, $129.99, seven discs). The original series with William Shatner as Capt. Kirk and Leonard Nimoy as Spock and all of the other familiar regulars gets the second-season box-set treatment, with some great episodes, including "I, Mudd," "The Trouble With Tribbles," "Journey to Babel" and many more.

True, the special effects are primitive by today's standards, but this is the series that started it all, with well-written episodes, great characters and inventive storylines.

Extras: Full frame, 26 episodes, making of featurettes, text commentary on select episodes, art gallery, photo gallery, promo trailers, optional English subtitles, chapters.

• "Three's Company: Season Three" (Anchor Bay, 1978-79, not rated, $39.98, four discs). This third-season set offers more hijinks with aspiring gourmet chef Jack Tripper (the late John Ritter) as he pretends to be gay so he can continue to room with down-to-earth Janet (Joyce DeWitt) and ditsy Chrissy (Suzanne Somers). Their landlords, the Ropers (Norman Fell, Audra Lindley), are still suspicious, and party boy Larry Dallas (Richard Kline), who lives upstairs, becomes a more prominent character.

The sexual double-entendres seem fairly tame compared to what's on TV these days, and the laughs still come primarily from the physical comedy and double takes performed by the very talented Ritter.

Extras: Full frame, 23 episodes, audio commentary (two episodes), second never-aired pilot (before Somers was cast), featurette: "Remembering John Ritter," new interviews, bloopers, promo spots, chapters.

• "The West Wing: The Complete Third Season" (Warner, not rated, $59.98, four discs). The third season of this series — released to coincide with the elections — begins with references to 9/11, introduces Ron Silver as a compelling character and has President Bartlet (Martin Sheen) addressing faith and morality as he struggles to deal with terrorists.

It's soap opera in the White House and sometimes concentrates too much on quirky characters and dull digressions, but it's also still generally enjoyable.

Extras: Widescreen, 22 episodes, optional audio commentary on select episodes (by writer/creator Aaron Sorkin), documentary special with real-life White House veterans, making-of featurettes, subtitle options (English, French, Spanish), chapters.

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E-mail: hicks@desnews.com