Question: What direct-to-films series features Batman: The Killing Joke?

Context articles: DC Universe Animated Original Movies
Kings and Queens (Killing Joke song)
Killing Joke (1980 album)
Paul Ferguson
Ha (Killing Joke album)
Pandemonium (Killing Joke album)
Extremities, Dirt and Various Repressed Emotions
Batman: The Killing Joke
Killing Joke (2003 album)
Batman: The Killing Joke (film)

The DC Universe Animated Original Movies (also known as DC Universe Original Movies) are direct-to-video film projects being created by Warner Premiere, Warner Bros.
 Animation, and DC Comics with the help of producers such as Bruce Timm.
 These more recent movie projects have also included many of the voice actors who worked on previous DC animated series and films.
"Kings and Queens" is Killing Joke's third single from their fifth studio album, "Night Time".
 It was originally released by E.G. Records on 21 March 1985 as a 12" and 7" single in the UK, and a 7" single by Polydor in the Netherlands.
 It was produced by Chris Kimsey.
 The 12" single featured "Kings and Queens (A Right Royal Mix)" as an A-side, and both "The Madding Crowd (Remixed by Killing Joke)" and "Kings and Queens" as B-sides. E.G.'s 7" single and Polydor's 7" single exempted "Kings and Queens (A Right Royal Mix)" and instead featured "Kings and Queens" as the A-side, and "The Madding Crowd (Remixed by Killing Joke)" as the B-side.
 E.G. also released a remix of the song, "Kings and Queens (Knaves Mix)", as an A-side and featured the same B-sides as the 12" single of "Kings and Queens".
Killing Joke is the debut studio album by English rock band Killing Joke.
 It was released in August 1980 by record label E.G.
Paul Ferguson (born Matthew Paul Ferguson, 31 March 1958) is a rock drummer, best known for his work in the post-punk/industrial group Killing Joke and cult English punk band Pink Parts.
 Following a stint as the drummer with the London-based Matt Stagger Band in 1978, Ferguson became a founding member of Killing Joke and served as their drummer from 1979 to 1987.
 He was known as 'Big Paul Ferguson' during this period.
"Ha" or "Ha": Killing Joke Live is the first commercially distributed live recording by English rock band Killing Joke.
 It was recorded at Larry's Hideaway in Toronto, Ontario, Canada on 9 and 10 August 1982, and released on 4 November by record label Virgin.
Pandemonium is the ninth studio album by English rock band Killing Joke, released on 2 August 1994 by record label Butterfly.
 This album marked Killing Joke's return after a four-year-long hiatus, the longest the band has taken since it was initially founded.
 This album also featured the return of founding member Youth, who replaced Paul Raven on bass.
Extremities, Dirt and Various Repressed Emotions is the eighth studio album by English rock band Killing Joke, recorded in August 1990 and in November 1990 by record label Noise.
 This is the only Killing Joke album to feature drummer Martin Atkins (formerly of Public Image Ltd and Brian Brain).
Batman: The Killing Joke is a 1988 DC Comics one-shot graphic novel featuring the characters Batman and the Joker written by Alan Moore and illustrated by Brian Bolland.
 "The Killing Joke" provides an origin story for the supervillain the Joker, loosely adapted from the 1951 story arc "The Man Behind the Red Hood!
".
 Taking place over two timelines, "The Killing Joke" depicts the Joker attempting to drive Jim Gordon insane and Batman's desperate attempt to stop him.
Killing Joke is the eleventh studio album by English rock band Killing Joke, released on 28 July 2003 by record label Zuma Recordings.
Batman: The Killing Joke is a 2016 American animated superhero film produced by Warner Bros.
 Animation and distributed by Warner Bros.
 Pictures.
 Featuring the DC Comics character Batman, the film is the twenty-sixth film in the DC Universe Animated Original Movies series, based on the by Alan Moore and Brian Bolland.
 The film is directed by Sam Liu, written by Brian Azzarello and stars the voices of Kevin Conroy, Mark Hamill, Tara Strong, and Ray Wise.
 Like the novel, the film follows the Joker's undertaking to drive police commissioner James Gordon insane, and Batman's desperate attempts to stop him.