Saul Metzstein (born 30 December 1970) is a Scottish film director.
 He is the son of renowned modernist architect Isi Metzstein, and Danielle Kahn.
 Metzstein was raised in Glasgow.
 He came to prominence with the 2001 feature "Late Night Shopping" (2001).
"A Town Called Mercy" is the third episode of the seventh series of the British science fiction television series "Doctor Who", transmitted on BBC One in the United Kingdom on 15 September 2012.
 It was written by Toby Whithouse and directed by Saul Metzstein.
David Butler (December 17, 1894 – June 14, 1979) was an American actor, film director, film producer, screenwriter, and television director.
"Dinosaurs on a Spaceship" is the second episode of the seventh series of the British science fiction television programme "Doctor Who".
 It first aired on BBC One in the UK on 8 September 2012 and on BBC America on the same date in the United States.
 It was written by Chris Chibnall and directed by Saul Metzstein.
"The Snowmen" is an episode of the British science fiction television series "Doctor Who", first broadcast on Christmas Day 2012 on BBC One.
 It is the eighth "Doctor Who" Christmas special since the show's 2005 revival and the first to be within a series.
 It was written by head writer and executive producer Steven Moffat and directed by Saul Metzstein.
If I Had My Way is a 1940 musical comedy film directed by David Butler and starring Bing Crosby and Gloria Jean.
 Based on a story by David Butler, the film is about a construction worker who takes charge of the daughter of a friend killed in an accident.
"The Crimson Horror" is the eleventh episode of the seventh series of the British science-fiction drama "Doctor Who".
 It was written by Mark Gatiss and directed by Saul Metzstein.
Guy X is a 2005 black comedy war film directed by Saul Metzstein, based on the novel "No One Thinks Of Greenland" by John Griesemer.
 The movie stars Jason Biggs, Natascha McElhone, Jeremy Northam, and Michael Ironside.
Chris Richmond is a British film and television production designer.
 Having read architecture at the University of Newcastle upon Tyne, he started his career in the film industry in 1998 as an art department runner on the BBC drama 'Births, marriages and deaths', starring Ray Winstone, Mark Strong and Phil Davis.
 He moved up to standby Art Director and worked on a number of award winning films and television dramas including "Control", "Endgame" and "The Queen's Sister".
 During his career, Richmond has worked with a number of notable directors, including Pete Travis, Simon Cellan Jones, Jez Butterworth, Saul Metzstein, Carol Morley and Matt Hope.
"The Name of the Doctor" is the thirteenth and final episode of the seventh series of the British science-fiction drama "Doctor Who" and was broadcast on 18   2013 (2013--) .
 It was written by Steven Moffat and directed by Saul Metzstein.

Question: Who has more titles, David Butler or Saul Metzstein?
Answer: David Butler