Question: Melissa Suzanne George (born 6 August 1976) is an Australian-American actress, who portrays Sadie Harris on what American television medical drama?

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The Day of Days (film): The Day of Days is a lost 1914 American drama film directed by Daniel Frohman and written by Louis Joseph Vance.  The film stars Cyril Scott, Sadie Harris, David Wall, Arthur Donaldson and Leonard Grover.  The film was released on January 20, 1914, by Paramount Pictures.

Moe Irvin: Maurice "Moe" Irvin is an American television and film actor best known for his role as Nurse Tyler Christian in the American television medical drama, "Grey's Anatomy".

Chelsee Healey: Chelsea "Chelsee" Jade Healey (born 6 August 1988) is an English actress.  She is best known for playing Janeece Bryant in the BBC school drama series "Waterloo Road" from 2006 to 2012 and as Honey Wright in the BBC medical drama series "Casualty" from 2014 until 2015 and as Goldie McQueen in the Channel 4 soap opera "Hollyoaks" from 2016.

Melissa McBride: Melissa Suzanne McBride (born May 23, 1965) is an American actress and former casting director, best known for her role as Carol Peletier on the AMC series "The Walking Dead".  McBride has garnered critical acclaim and received multiple awards and nominations for her role on the show.

Sadie Harris: Sadie Harris was a recurring fictional character from the American television medical drama "Grey's Anatomy", which airs on the American Broadcasting Company (ABC) in the United States.  The character was created by series producer Shonda Rhimes and portrayed by actress Melissa George.  Introduced as a surgical intern who has an old companionship with the series' protagonist Meredith Grey (Ellen Pompeo), she eventually forms a friendship with Lexie Grey (Chyler Leigh), and departs after it is revealed she cheated her way into the surgical program.

Now or Never (Grey's Anatomy): "Now or Never" is the twenty-fourth episode and the season finale of the fifth season of the American television medical drama, "Grey's Anatomy" and the show's 102nd episode overall.  Written by Debora Cahn and directed by Rob Corn, the episode was originally broadcast on the American Broadcasting Company (ABC) in the United States on May 14, 2009.  The initial airing was viewed by 17.12 million viewers and garnered a 6.2/17 Nielsen rating/share in the 18–49 demographic.  The episode marked the last appearance of series regular T.R. Knight who played Dr. George O'Malley who got into an accident during the episode and dies in the season 6 premier.

Grey's Anatomy (season 2): The second season of the American television medical drama Grey's Anatomy commenced airing on the American Broadcasting Company (ABC) on September 25, 2005, and concluded on May 15, 2006.  The season was produced by Touchstone Television, in association with Shondaland production company and The Mark Gordon Company, the showrunner being Shonda Rhimes.  Actors Ellen Pompeo, Sandra Oh, Katherine Heigl, Justin Chambers, and T.R. Knight reprised their roles as surgical interns Meredith Grey, Cristina Yang, Izzie Stevens, Alex Karev, and George O'Malley, respectively.  Previous main cast members Chandra Wilson, James Pickens, Jr., Isaiah Washington, and Patrick Dempsey also returned, while Kate Walsh, who began the season in a recurring capacity, was promoted to series regular status, after appearing in seven episodes as a guest star.

Melissa George: Melissa Suzanne George (born 6 August 1976) is an Australian-American actress.  A former national rollerskating champion and model in Australia, George began her acting career playing Angel Parrish on the Australian soap opera "Home and Away" from 1993 to 1996.  After moving to the United States, George made her film debut in the neo-noir science fiction feature "Dark City" (1998) and later appeared in supporting roles in Steven Soderbergh's crime film "The Limey" (1999) and David Lynch's "Mulholland Drive" (2001).

Grey's Anatomy (season 3): The third season of the American television medical drama Grey's Anatomy, commenced airing on the American Broadcasting Company (ABC) on September 21, 2006, and concluded on May 17, 2007.  The season was produced by Touchstone Television, in association with Shondaland Production Company and The Mark Gordon Company, the showrunner being Shonda Rhimes.  Actors Ellen Pompeo, Sandra Oh, Katherine Heigl, Justin Chambers, and T.R. Knight reprised their roles as surgical interns Meredith Grey, Cristina Yang, Izzie Stevens, Alex Karev, and George O'Malley, respectively, continuing their expansive storylines as focal points throughout the season.  Previous main cast members Chandra Wilson, James Pickens, Jr., Kate Walsh, Isaiah Washington, and Patrick Dempsey also returned, while previous guest stars Sara Ramirez and Eric Dane were promoted to series regulars, following the extension of their contracts.

MDs (TV series): MDs "(Medical Doctors)" is an American television medical drama that aired on ABC in 2002.  It starred William Fichtner as Dr. Bruce Kellerman, Jane Lynch as Aileen Poole, and John Hannah as Dr. Robert Dalgety.  The series only lasted one season, and though 11 episodes were filmed, only 8 were ever aired.  The series was never released on DVD and it is very hard to find.  The only known full length episodes of "MDs" can be found on YouTube.  "MDs" was written and created by Gary Tieche.

Supporting paragraphs: Sadie Harris Melissa George
Answer: "Grey's Anatomy"