Jeffrey Dean Morgan is an American actor, best known to TV audiences as Denny Duquette on Grey's Anatomy. He was born in Seattle, Washington and attended Ben Franklin Elementary School, Rose Hill Junior High and Lake Washington High School in the nearby smaller city of Kirkland. Morgan was a basketball player in high school and university, until a knee injury ended his desire for a career in the sport. He was also a graphic artist for a time.

Starting with the 1991 movie Uncaged, Morgan has appeared in 15 feature films. The bulk of Morgan's work has been in television. He was the star of the 1996-1997 television show The Burning Zone; his character, Dr. Edward Marcase, appeared in 10 out of 19 episodes that season. Since 2000, he has amassed a number of credits in television shows such as ER, JAG, Walker, Texas Ranger, Angel, Tru Calling, CSI: Crime Scene Investigation, Sliders, The O.C., and Monk.

In 2005 and 2006, Morgan simultaneously appeared in three separate television series: On the CW series Supernatural as John Winchester, the mysterious father of Sam (Jared Padalecki and Dean (Jensen Ackles; in a recurring role on ABC's Grey's Anatomy as heart transplant patient Denny Duquette, who carried on a relationship with intern Izzie Stevens (Katherine Heigl and died in the show's second-season finale, though his character made an appearance in a three show arc during Meredith's death scene in season 3 and also appears in season 5; as Judah Botwin, on the Showtime series Weeds.

Morgan was cast in a new project by Grey's Anatomy creator Shonda Rhimes. The show, tentatively titled "Correspondents", was supposed to have started production in summer 2007. ABC picked up a spinoff of Grey's Anatomy, called Private Practice, which was also created by Rhimes, and that project has rendered the future of "Correspondents" uncertain. Morgan is also among the cast of a movie that is based on a novel by the Irish novelist Cecelia Ahern, PS, I Love You. The movie was released on December 21 2007. Another 2007 film starring Morgan is The Accidental Husband, which finished filming in New York City in March 2007. Morgan also recently finished filming Days of Wrath, a film about gangland violence in Los Angeles.

It has been confirmed that Morgan will portray The Comedian, a cigar-chomping vigilante, in the upcoming Watchmen, based on Alan Moore's graphic novel.