We all know that Barbara Eden,Elizabeth Montgomery and Carolyn Jones all played dual roles.Can you name any other actors who have done that on TV?

Richard Dimitri as Bertram and Renaldo in When Things Were Rotten

George Grizzard as Alan Talbot/Walter Ryder Jr. in the episode "In His Image" from Twilight Zone

Liberace as Chandell (Likewise as Harry) in "The Devil's Fingers" and "The Dead Ringers" from Batman

Brent Spiner played the android Data and his evil twin Lore on Star Trek: The Next Generation.

Fred MacMurray played both Steve Douglas and his Scottish cousin Fergus McBain Douglas on My Three Sons.

Max Baer Jr. played both Jethro Bodine and his sister Jethrine on Beverly Hillbillies.

How could you forget Patty Duke?!!!!!!

And,in a 1966 episode of Perry Mason called "The Case of the Dead Ringer",Raymond Burr played both Perry Mason AND the murderer,Mr.Grimes.And on F-Troop,Forrest Tucker,Larry Storch and Ken Berry ALL played dual roles.

The Brady Bunch

Ann B. Davis played Alice & Cousin Emma
Florence Henderson played Carol & Grandma Hutchins
Robert Reed played Mike & Grandpa Brady
Christopher Knight played Peter & Arthur

Brent Spiner once played 3 roles on an episode of "STAR TREK: THE NEXT GENERATION". Besides his regular role of Data, he also played his evil brother Lore and their creator Dr. Noonian Sing. And he also played Lore in a couple other episodes.
On the finale of "STAR TREK: VOYAGER" Kate Mulgrew, who played Capt Katherine Janeway, also played her future self; ADMIRAL Katherine Janeway.
Once on "STAR TREK: DEEP SPACE 9" Jonathan Frakes, who played Lt. William Riker on "TNG" guest-stared as Rikers evil clone who was created as the result of a transporter malfunction.
On "STAR TREK: THE NEXT GENERATION" Denise Crosby who played Lt. Tasha Yar in the first season guest-stared as her in a second season episode then later played her twin sister in a couple episodes.
William Shatner who, of course played Capt. James Tiberious Kirk on "STAR TREK" once also played an evil duplicate of Kirks, created by a transporter malfunction.
And in another episode he played an alien who made himself look just like Kirk.
And in yet ANOTHER episode he played an android duplicate of Kirks.

once, on a "THE HONEYMOONERS" sketch on "THE JACKIE GLEASON SHOW" in the 50s, Jackie played Ralph and a gangster who looked just like him. (on that episode the show was done live, and they had to end the sketch abruptley when they ran out of time)
And in a christmas sketch of "THE HONEYMONERS" again in the 50s on "THE JACKIE GLEASON SHOW" he played Ralph of course; but he also played the other characters he did on the show. The sketch was a remake of one they had done earlier, when it was on The Dumont Network and was called "THE CALVACADE OF STARS".

Friends-Lisa Kudrow played Phoebe and her sister Ursala.

Lost In Space-Jonathon Harris played Dr. Smith and Zeno in an episode.
The whole cast played their duplicates in a two of the shows in Target Earth, Phantom Family and Guy Williams, Mark Goddard played duo roles as their opposites on another episode called The Anti-Matter Man.

Linda Evans played "Krystle Carrington" as well as her impostor "Rita" on the ABC show "Dynasty" (and that is when it jumped the shark).

Lisa Hartman played "Ciji Dunne" and then her look-alike "Cathy Geary" on the CBS show "Knots Landing" (and that is when the show got better than ever!).

My Three Sons -- Don Grady played a one-shot creep named Douglas Frazier (sp) in one episode, alongside his regular character Robbie Douglas

Happy Days -- Al Molinaro played both Big Al and Father Delvecchio

Laverne & Shirley -- Cindy Williams portrayed a look-alike in one episode

The Rifleman -- Chuck Connors played an evil look-alike along with Lucas McCain (and IIRC Paul Fix also played a dead ringer for his Micah Torrence character)

Bonanza -- Dan Blocker and Michael Landon played the evil Slade Brothers in addition to their roles as Hoss & Little Joe

The Patty Duke Show -- William Schallert played his character's brother IIRC, donning a moustache

Gilligan's Island -- Bob Denver played a Soviet spy alongside his Gilligan character;
Jim Backus played both Thurston Howell III and an impostor;
Tina Louise played both Eva Grubb and Ginger

Andy Kaufman - played both Latka and Vic on Taxi.

Jack Lord - on the series finale of Hawaii Five-O he played a character named Professor Roundtree in addition to his usual Steve MacGarett role.

Jaleel White - played not just his usual Steve Urkel character buy many, MANY forms of his Steve Urkel character such as Stefan Urquelle, Myrtle, Bruce Lee Urkel, etc.

David Canary played 'Adam and Stuart Chandler' on All My Children.

There's probably been many on soaps over the years.

On Y&R:

Jeanne Cooper has played Katherine Chancellor and Marge Cotrooke.

Michelle Stafford has played Phyllis Newman and Sheila Carter.

Currently, Stacy Haiduk is playing Patty Williams and Emily Peterson, and Tracey E. Bregman is playing Lauren Fenmore and Sarah Smythe/Sheila Carter.

I never watched Days, but I know Eileen Davidson played multiple characters.

Julianne Moore played Frannie & Sabrina Hughes on As the World Turns

Teri Hatcher played Lois Lane and a Lois clone on Lois & Clark

On The Abbott and Costello Show not only did Sidney Fields play the boy's landlord, Mr. Fields, he also played many of Mr. Fields relatives (Uncles, Brothers etc.) that the boy's interacted with. He also played numerous unrelated characters as well.

Another World:

Ellen Wheeler (1984-86) - Vicky and Marley Hudson, winning an Emmy in the process. In 1998, Wheeler returned to AW as Marley and played the role until the show was cancelled the next year.

Anne Heche (1987-91) - In her first major gig, Anne took over the role of the twins and made them her own. Just like Ellen Wheeler, Ms. Heche won an Emmy for the dual role.

Jensen Buchanan (1991-94, 1997-98) - When Anne Heche left AW, Jensen Buchanan took over the dual role but only played it for 3 years. When her contract was up for renewal in 1994, Ms. Buchanan wanted to ease her workload and only wanted to play one character - Vicky. So Marley was phased out and Jensen only played Vicky for 3 years. Marley finally returned to AW in 1997 as played by Ms. Buchanan until Marley was burned in a fire. Plastic surgery and voila - in came original portrayer Ellen Wheeler, which explained why the identical twins no longer had identical features. Like Wheeler and Heche before her, Buchanan was nominated for an Emmy. Unlike the other two, she never won.

And,in the third season episode of "The Doris Day Show",Billy DeWolfe played Jarvis AND his lookalike,nice,and fun-loving Uncle Randy.

on "MARY HARTMAN, MARY HARTMAN" Martin Mull played a character named Garth Gimble in a few episodes then in the show "FERNWOOD TONIGHT" (and its sequel "AMERICA TONIGHT") he played his twin brother Barth Gimble.

The Dick Van Dyke Show -- Dick Van Dyke played his character's uncle, seen on film after the uncle's death, in addition to the Rob Petrie role. (The grey hair and moustache eerily foretold DVD's own future appearance!)

The Beverly Hillbillies -- Roy Clark played both Cousin Roy and Roy's elderly mother.

Tina Louise played Eva on Gilligan's Island as well as Ginger
David played a guy that Rachel went out with named Russ in the second season episode TOW Russ

The Dick Van Dyke Show -- Dick Van Dyke played his character's uncle, seen on film after the uncle's death, in addition to the Rob Petrie role. (The grey hair and moustache eerily foretold DVD's own future appearance!)

The Beverly Hillbillies -- Roy Clark played both Cousin Roy and Roy's elderly mother.
about that BEVERLY HILLBILLIES episode; they needed a pair of pantyhose for Roy Clark for when he played his mother and they got the biggest pair they could find, but they were too big so they had to cut holes in the legs for him to stick his feet through.:lol:

Richard Sanders played both Les and Les' mother in a WKRP episode. Same goes for Bronson Pinchot on Perfect Strangers - played both Balki and Balki's mama in one episode. He also played both Balki and Balki's cousin Bart in an earlier episode.

Erika Slezak - played Viki and her twin Niki on OLtL

And the late Fred Gwynne,in the first season episode of "The Munsters"called "Knock Wood,Here Comes Charlie",played Herman AND his British-speaking (sort of)cousin Charlie,who charmed everone but Herman,and on "Full House",John Stamos played Jesse and his devious cousin Stavros.

once on "MAVERICK" James Garner also played Bret & Barts "pappy".

And on the show "NICHOLS" where he starred, in the last episode he was killed then for the rest of the episode he played his twin brother.

Erika Slezak - played Viki and her twin Niki on OLtL

Niki isn't her twin, she's one of Viki's "alters" and ES played others as well

Adventures of Superman -- Jack Larson played a criminal in one episode who was a look-alike for his character, Jimmy Olsen.

We all know that Barbara Eden,Elizabeth Montgomery and Carolyn Jones all played dual roles.Can you name any other actors who have done that on TV?Harry Morgan played wacky Gen. Steele in an episode of M*A*S*H; then returned later as Col. Potter.

Adventures of Superman -- Jack Larson played a criminal in one episode who was a look-alike for his character, Jimmy Olsen.

George Reeves (who always played the dual role of Clark Kent/Superman) was
a gangster lookalike in one episode, too.

And Bill Bixby (David Banner) played a gangster on The Incredible Hulk episode "Broken Image."