Question: The Princess and the Frog starred a man who is best known for playing who? 
Context: Jerome Ysroael Lettvin (February 23, 1920 – April 23, 2011), often known as Jerry Lettvin, was an American cognitive scientist, and Professor of Electrical and Bioengineering and Communications Physiology at the Massachusetts Institute of Technology (MIT).  He is best known as the lead author of the paper, "What the Frog's Eye Tells the Frog's Brain" (1959), one of the most cited papers in the Science Citation Index.  He wrote it along with Humberto Maturana, Warren McCulloch and Walter Pitts, and in the paper they gave special thanks and mention to Oliver Selfridge at MIT.  Lettvin carried out neurophysiological studies in the spinal cord, made the first demonstration of "feature detectors" in the visual system, and studied information processing in the terminal branches of single axons.  Around 1969, he originated the term "grandmother cell" to illustrate the logical inconsistency of the concept. Secret History of Princess Taiping, also known as Taiping Gongzhu Mishi, is a 2012 Chinese historical television series.  The protagonist is the firstborn daughter (posthumously known as Princess Andingsi, who died in infancy according to history) of Wu Zetian, the only female emperor in Chinese history.  However, in this television series, the princess survived, and when she grows up she impersonates her younger sister Princess Taiping to take revenge on her mother and attempts to seize the throne for herself.  Directed by Lee Hon-to and Zhou Min, the series starred three actresses — Alyssa Chia, Zheng Shuang and Lin Miaoke — as Princess Taiping, each playing the princess at a different stage of her life.  It was first broadcast in mainland China on Hunan Satellite TV on 27 March 2012. Anika Noni Rose (born September 6, 1972) is an American singer and actress known for her Tony Award-winning performance in the Broadway production of "Caroline, or Change" and her starring role as Lorrell Robinson in the 2006 film "Dreamgirls".  She also starred as Tiana, an African American princess in Walt Disney Pictures' 2009 animated film "The Princess and the Frog".  In 2014, Rose played the role of Beneatha Younger in the Broadway revival of "A Raisin in the Sun", for which she was nominated for the Tony Award for Best Featured Actress in a Play.  She was named a Disney Legend in 2011. Frank Vlastnik (born May 30, 1969 in Peru, Illinois) is an American theatre and television actor.  He is best known as an original cast member in the short lived musicals "Big", "Sweet Smell of Success", and "A Year with Frog and Toad" on Broadway, and Off-Broadway in Stephen Sondheim's musical "Saturday Night".  His big break came when he was cast as the original understudy for the leading role in "Big".  He later starred on and off-Broadway in "A Year with Frog and Toad" in which he played the 'Snail with the Mail', and was featured on the cast album.  He also guest starred on episodes of "Law & Order", "The Good Wife", "Boardwalk Empire", "Person of Interest", and "Elementary".  He is the co-author of the books "Broadway Musicals" and "Sitcoms", both published by Black Dog & Leventhal/Hachette. Edward Davies "Eddie" Frierson (born November 22, 1959) is an American voice actor and stage actor He has provided voices for such films as "Wreck-It Ralph, Hotel Transylvania, The Princess and the Frog, ParaNorman, Curious George, Tangled," the video games and and the animated television series "MÄR: Märchen Awakens Romance" but is perhaps best known for playing Baseball Hall of Fame pitcher Christy Mathewson in the one-man show "Matty: An Evening with Christy Mathewson". The Princess and the Frog is a 2009 American animated musical film produced by Walt Disney Animation Studios and released by Walt Disney Pictures.  The 49th Disney animated feature film, the film is loosely based on the novel "The Frog Princess" by E. D. Baker, which is in turn based on the Brothers Grimm fairy tale "The Frog Prince".  Written and directed by Ron Clements and John Musker, the film features an ensemble voice cast that stars Anika Noni Rose, Bruno Campos, Keith David, Michael-Leon Wooley, Jennifer Cody, and Jim Cummings, with Peter Bartlett, Jenifer Lewis, Oprah Winfrey, Terrence Howard, and John Goodman.  Set in 1920s New Orleans, the film tells the story of a hardworking waitress named Tiana who dreams of owning her own restaurant.  After kissing a prince who has been turned into a frog by an evil voodoo sorcerer, Tiana becomes a frog herself and must find a way to turn back into a human before it is too late. "The Frog Prince; or, Iron Henry" (German: "Der Froschkönig oder der eisen Heinrich" , literally "The Frog King; or, The Iron Heinrich") is a fairy tale, best known through the Brothers Grimm's written version; traditionally it is the first story in their collection. Elizabeth Dawson Baker is an American children's novelist probably best known for writing the book "The Frog Princess", on which the 2009 Disney film "The Princess and the Frog" is partly based.  That book has also inspired a series of eight additional books based on that novel. Hartmut Esslinger (born June 5, 1944) is a German-American industrial designer and inventor.  He is best known for founding the design consultancy Frog Design Inc. (stylized as "frog"). John Stephen Goodman (born June 20, 1952) is an American actor.  Early in his career, he was best known for playing Dan Conner on the ABC TV series "Roseanne" (1988–1997), for which he won a Golden Globe Award for Best Actor in 1993.  He is also a regular collaborator with the Coen brothers on such films as "Raising Arizona" (1987), "Barton Fink" (1991), "The Big Lebowski" (1998), "O Brother, Where Art Thou? " (2000), and "Inside Llewyn Davis" (2013).  Goodman's voice roles in animated films include Pacha in Disney's "The Emperor's New Groove" (2000), and Sulley in Pixar's "Monsters, Inc." (2001), and "Monsters University" (2013).
Answer: Dan Conner