Title: ER (season 4)
Content:  midway through the season. Following his departure Adams was promoted to producer and Richard Thorpe and Michael Salamunovich joined the production team as co-producers. Thorpe had previously worked on the series as both a cinematographer and director. Salamunovich was the series unit production manager for the first three seasons and continued to fulfill this role as a co-producer. Michael Hissrich continued to serve as an associate producer. Manning, Hissrich, and Gentile all left the crew with the close of the season. The series executive producers took a back seat to new writers in the fourth season. Wells' writing role was limited to just two episodes. Woodward wrote a single episode. Manning 
Title: Dexter (season 4)
Content:  Third season executive producers John Goldwyn, Sara Colleton, Clyde Phillips and Charles H. Eglee all returned to their roles. Third season co-executive producers Scott Buck, Melissa Rosenberg and Michael C. Hall were all promoted to executive producers for the fourth season. Third season producer Timothy Schlattmann was promoted to supervising producer for the fourth season. Wendy West also joined the crew as a supervising producer and writer. Third season co-producer Lauren Gussis was promoted to producer. Robert Lloyd Lewis remained the on set producer. Gary Law remained a co-producer. Associate producer Chad Tomasoski returned and was promoted to co-producer mid-season.
Title: 30 Rock (season 4)
Content:  The fourth season was produced by Broadway Video, Little Stranger, Inc., and Universal Media Studios and was aired on the NBC network. The executive producers were series creator Tina Fey, Lorne Michaels, Marci Klein, David Miner, and Robert Carlock. Jack Burditt, Matt Hubbard, Jeff Richmond, John Riggi, and Ron Weiner acted as co-executive producers. The producers for the season were Alec Baldwin, Jerry Kupfer, Paula Pell, and Don Scardino with Diana Schmidt, Irene Burns, and Kay Cannon as co-producers. There were eight directors through the season, two of which—series producer Scardino and Beth McCarthy-Miller—directed multiple episodes. There were six directors who each directed a single episode of the season: Riggi, Gail Mancuso, Ken Whittingham, Stephen Lee Davis, Millicent Shelton, and Richmond. Writers credited with episodes in the fourth season included Fey, Carlock, Riggi, Hubbard, Weiner, Dylan Morgan & Josh Siegal, Jon Haller & Tracey Wigfield, Burditt, and Pell.
Title: T4 (Channel 4)
Content:  T4's executives were Henrietta Conrad (executive producer) and Sebastian Grant (series producer) for Princess Productions, and Cath Lovesey (series editor) and Sangeeta Bhaskar (Channel 4 executive) for Channel 4.
Title: The O.C. (season 4)
Content:  The season was produced by Warner Bros. Television, College Hill Pictures and Wonderland Sound and Vision. The executive producers were Bob DeLaurentis, creator Josh Schwartz and Wonderland co-founders McG and Stephanie Savage. Ian Toynton and John Stephens served as co-executive producers. The staff writers were Schwartz, Savage, Stephens, J.J. Philbin, Leila Gerstein and Mark Fish. The regular directors throughout the season were Toynton, Michael Lange, Norman Buckley and Patrick Norris.
Title: Lost (season 4)
Content:  The fourth season was produced by ABC Studios, Bad Robot Productions and Grass Skirt Productions. Damon Lindelof and Carlton Cuse served as the season's show runners. The show was primarily filmed in Hawaii with post-production in Los Angeles. Lindelof and Cuse's fellow executive producers were co-creator J. J. Abrams, Bryan Burk and Jack Bender. The staff writers were Lindelof, Cuse, co-executive producers Edward Kitsis, Adam Horowitz, and Drew Goddard, supervising producer Elizabeth Sarnoff, co-producer Brian K. Vaughan and executive story editor Christina M. Kim. The regular directors were Bender and co-executive producer Stephen Williams.
Title: Community (season 4)
Content:  Moses Port, the co-creators of the short-lived CW series Aliens in America. Sony Pictures Television claimed that Harmon would serve as a consulting producer, but Harmon affirmed via his Tumblr that he would not return in a position without executive prerogatives. Regardless, Harmon was credited as an "executive consultant" for the season, despite not working on a single episode. The fourth season saw other behind-the-scenes changes, as well. Executive producers Neil Goldman and Garrett Donovan, writer/producer Chris McKenna and actor/writer Dino Stamatopoulos all departed following the third season. Frequent episode directors and executive producers Anthony and Joe Russo also left in order to direct Captain America: The Winter Soldier. McKenna, Stamatopoulos, and Joe Russo later 
Title: ER (season 4)
Content:  Original executive producers John Wells and Michael Crichton reprised their roles. Lydia Woodward also returned as an executive producer and writer. Carol Flint became a fourth executive producer. Flint was replaced as co-executive producer by Christopher Chulack. Chulack was previously a regular director and a producer for the third season. Paul Manning left his supervising producer role but remained involved with the series as an executive consultant. Long-time crew members Lance Gentile and Neal Baer were promoted to producers for the fourth season. Third season co-producers Wendy Spence Rosato and Penny Adams returned to their positions. Jack Orman and David Mills joined them as new co-producers and writers. Mills left the 
Title: The Office (American season 4)
Content:  The fourth season of the show was produced by Reveille Productions and Deedle-Dee Productions, both in association with Universal Media Studios. The show is based upon the British series created by Ricky Gervais and Stephen Merchant, both of whom are executive producers on both the US and UK versions. The Office is produced by Greg Daniels, who is also an executive producer and the show runner. All the writers from the previous season returned, with the writing staff consisting of Daniels, Michael Schur, Lester Lewis, Mindy Kaling, B. J. Novak, Paul Lieberstein, Lee Eisenberg, Gene Stupnitsky, Jennifer Celotta, Brent Forrester, and Justin Spitzer. Schur, Lieberstein and Celotta 
Title: Vikings (season 4)
Content:  Vikings is an Irish-Canadian co-production presented by Metro-Goldwyn-Mayer. The fourth season was developed and produced by Octagon Films for the first sixteen episodes, TM Productions for the last four episodes, and Take 5 Productions. Morgan O'Sullivan, Sheila Hockin, Sherry Marsh, Alan Gasmer, James Flynn, John Weber, and Michael Hirst are credited as executive producers. This season was produced by Keith Thompson for the first eight and for the last four episodes, and Sanne Wohlenberg for the ninth to sixteenth episodes. Bill Goddard and Séamus McInerney are co-producers. The production team for this season includes casting directors Frank and Nuala Moiselle, costume designer Joan Bergin, visual effects supervisor Dominic Remane, stunt action designers Franklin Henson and Richard Ryan, composer Trevor Morris, production designer Mark Geraghty, editors Aaron Marshall for the first, fourth, seventh, fifteenth and eighteenth episodes, Christopher Donaldson for the second, fifth and eighth episodes, Tad Seaborn for the third, sixth, ninth, eleventh, thirteenth, sixteenth and nineteenth episodes, and Don Cassidy for the tenth, twelfth, fourteenth, seventeenth and twentieth episodes, and cinematographers PJ Dillon for the first eight and last four episodes, and Owen McPolin for the ninth to sixteenth episodes.

Question: Who was the producer of April?
Answer: Nanni Moretti.
Giovanni "Nanni" Moretti.
Giovanni Moretti.