From left, Pernell Roberts, Michael Landon, Lorne Greene and Dan Blocker in the fan-favorite vintage Western series "Bonanza."

Follow-up seasons of three vintage TV series lead these new DVD releases.

“Bonanza: The Official Sixth Season Value Pack, Vols. 1 and 2” (CBS/Paramount, 1965-65, nine discs, $68.98, 34 episodes, audio commentaries, promos, photo galleries, Michael Landon and Lorne Greene singing in excerpts from ’60s variety shows). This long-running and wildly popular Western series (still being shown in reruns) remains most entertaining as Ben Cartwright (Greene) and his three sons Adam (Pernell Roberts), Hoss (Dan Blocker) and Little Joe (Landon) get in and out of scrapes while running their massive Ponderosa ranch in 19th century Virginia City.

After flirting with departing the show during Season 5 (along with storylines designed to help him go), Roberts decided to hang on for one more year but finally did leave toward the end of this season (he’s absent from the last three episodes). Plots have Ben kidnapped, a wealthy land-grabber trying to steal the Ponderosa, Adam digging up some dark Virginia City secrets and Little Joe putting Hoss through some stomach-churning training for a flapjack-eating contest.

Future stars Charles Bronson, Telly Savalas, Tom Skerritt, George Kennedy, Mariette Hartley and Joan Hackett make guest appearances, along with veterans Harry Carey Jr., Ed Wynn and Michael Rennie. (Vols. 1 and 2 also sold separately, $46.99 each)

“Dynasty: The Seventh Season, Vols. 1 and 2” (CBS/Paramount, 1986-87, seven discs, $79.99, 28 episodes). Created to compete with “Dallas,” this glossy primetime soap opera hit its peak with earlier seasons but was still hanging on in Season 7, with John Forsythe, Linda Evans and Joan Collins continuing to dominate the cast, along with notable appearances by Heather Locklear, Diahann Carroll, Emma Samms and others. (Vols. 1 and 2 also sold separately, $39.99 each)

“Medical Center: The Complete Third Season” (Warner Archive, 1971-72, six discs, $49.95, 24 episodes). Chad Everett and James Daly star as physicians in a university hospital in this dramatic series, with plots this season focusing on problems with the doctors as much as the patients. Guests include Michael Douglas, Leslie Nielsen, Suzanne Pleshette, Stefanie Powers, Jessica Walter, Vera Miles, Tyne Daly and Ida Lupino. (Available at

“Unforgettable: The First Season” (CBS/Paramount, 2011-12, six discs, $61.99, 20 episodes, deleted scenes, audio commentaries, featurettes, promos, bloopers). After seven seasons as a New York FBI agent on “Without a Trace,” Poppy Montgomery returns to series TV as a New York police detective with an unusual memory; she can’t forget anything. Interesting police procedural co-stars Dylan Walsh and Jane Curtain. (The series’ belated second season began in June.)

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“Warehouse 13: Season Four” (Universal/Syfy, 2012-13, five discs, $49.98, 20 episodes, deleted/extended scenes, podcasts, animated webisodes, bloopers). Offbeat series about federal agents investigating mysteries behind “mythical” artifacts in the title location is a “dramedy” (dramatic comedy) that mashes together elements of “Raiders of the Lost Ark” and “The X-Files.” (Fifth and final season has been commissioned for 2014.)

“Teenage Mutant Ninja Turtles: Enter the Shredder” (Nickelodeon/Paramount, 2013, $14.99, seven episodes). More animated episodes of the rebooted adventures of Leonardo, Raphael, Donatello and Michelangelo.

“The Legend of Korra: Book One: Air” (Nickelodeon/Paramount, 2013, $19.99, audio commentaries, featurette). Animated sequel/reboot of “Avatar: the Last Airbender,” focusing on a 17-year-old heroine. (Also on Blu-ray, $34.99)

Chris Hicks is the author of "Has Hollywood Lost Its Mind? A Parents Guide to Movie Ratings." His website is