The Odd Couple II is the 1998 sequel to 1968's "The Odd Couple".
 Written by Neil Simon (who also produced), the film reunites Jack Lemmon as Felix Ungar and Walter Matthau as Oscar Madison.
 The film was the actors' last together.
 It is also significant among sequels for having one of the longest gaps between the release of the original and a sequel in which all leads return.
"The Odd Couple" is a television situation comedy broadcast from September 24, 1970 to March 7, 1975 on ABC.
 It starred Jack Klugman as Oscar Madison and Tony Randall as Felix Unger.
 The following is a list of episodes.
The Odd Couple, formally titled onscreen Neil Simon's The Odd Couple, is an American television situation comedy broadcast from September 24, 1970, to March 7, 1975, on ABC.
 It stars Tony Randall as Felix Unger and Jack Klugman as Oscar Madison, and was the first of several sitcoms developed by Garry Marshall for Paramount Television.
 The show is based on the play of the same name, which was written by Neil Simon.
 Felix and Oscar are both divorced.
 They share a Manhattan apartment, and their different lifestyles inevitably lead to conflicts and laughs.
John Uhler "Jack" Lemmon III (February 8, 1925 – June 27, 2001) was an American actor and musician.
 Lemmon was an eight time Academy Award nominee, with two wins.
 He starred in over 60 films, such as "Some Like It Hot", "The Apartment", "Mister Roberts" (for which he won the 1955 Academy Award for Best Supporting Actor), "Days of Wine and Roses", "The Great Race", "Irma la Douce", "The Odd Couple" and its sequel 30 years later, "The Odd Couple II", (and other frequent collaborations with "Odd Couple" co-star Walter Matthau), "Save the Tiger" (for which he won the 1973 Academy Award for Best Actor), "The Out-of-Towners", "The China Syndrome", "Missing" (for which he won Best Actor at the 1982 Cannes Film Festival), "Glengarry Glen Ross", "Tuesdays with Morrie", "Grumpy Old Men", and "Grumpier Old Men".
Walter Matthau ( ; born Walter John Matthow; October 1, 1920 – July 1, 2000) was an American actor and comedian, best known for his role as Oscar Madison in "The Odd Couple" and its sequel 30 years later, "The Odd Couple II", and his frequent collaborations with "Odd Couple" co-star Jack Lemmon, particularly in the '90s with "Grumpy Old Men" and its sequel "Grumpier Old Men".
 He won the Academy Award for Best Supporting Actor for his performance in the 1966 Billy Wilder film "The Fortune Cookie."
 Besides the Oscar, he was the winner of BAFTA, Golden Globe and Tony awards.
Who's Got the Action?
 is a 1962 American comedy film about a man suffering from an addiction to gambling starring Dean Martin, Lana Turner, Eddie Albert, and Walter Matthau.
 The film was written by Alexander Rose and Jack Rose, and directed by Daniel Mann.
Harry Winkler was an American sitcom writer who wrote for such shows as "The Addams Family", "The George Gobel Show", and others.
 He shared an Emmy award in 1955 for "The George Gobel Show" and was nominated the following year for the same show.
 In that same year, 1956, one of his television scripts was featured in "The Prize Plays of Television and Radio 1956" published by Random House.
 Mr. Winkler also wrote the ground breaking series "Julia" starring Dianne Carroll, the first commercial television series to star an African-American female in the lead role of a single, professional woman with a family to support.
 He also wrote the original treatment "The Flagstones" for what ultimately became known as "The Flintstones".
 Additional credits include having been the ghost writer for the internationally featured Blondie comic strip series for over 25 years, 1955 through 1980.
 He also wrote for a wide variety of other comedy series ranging from Petticoat Junction, to the Brady Bunch, to the Odd Couple.
 In 2014 he received a posthumous award from the Writers Guild of America for his work on the Odd Couple television series, that script having been designated one of the top 100 television screenplays during the first 75 years of commercial television.
 He is also the author of three novels and a theatrical play, "Edges".
Lou Cutell (born October 6, 1930) is an American movie and television actor.
 He portrayed the proctologist, Dr. Cooperman, in "The Fusilli Jerry" episode of the television series "Seinfeld" and Leo Funkhouser on "Curb Your Enthusiasm".
 Among cult movie fans, he is best known for his portrayal of Dr. Nadir in "Frankenstein Meets the Space Monster", and he can be briefly seen in "Pee-wee's Big Adventure" as Amazing Larry.
 In 1998, he also played a small role in "The Odd Couple II" as Abe, one of Oscar Madison (Walter Matthau)'s card-playing friends in Sarasota, Florida.
 Recently, he was a series regular on the NBC show, "Betty White's Off Their Rockers".
 In 2013, he appeared on the "How I Met Your Mother" episode "Last Time in New York".
Thomas Patrick Lennon (born August 9, 1970) is an American actor, comedian, screenwriter, producer and director best known as a cast member on MTV's "The State", for his role as Lieutenant Jim Dangle on the Comedy Central series "Reno 911!
" and as Felix Unger on the CBS series "The Odd Couple."
 He is the writing partner of Robert Ben Garant.
The Odd Couple is a 1968 American comedy Technicolor film in Panavision, written by Neil Simon, based on his play of the same name, produced by Howard W. Koch and directed by Gene Saks, and starring Jack Lemmon and Walter Matthau.
 It is the story of two divorced men—neurotic neat-freak Felix Ungar and fun-loving slob Oscar Madison—who decide to live together, even though their personalities clash.

Question: What is the name of the American actor and comedian who featured in 'Who's Got the Action'  American comedy and is also best known for his role as Oscar Madison in ''The Odd Couple''?
Answer: Walter Matthau