Question: Eric Matthews was a character from the "Saw" movie directed by whom?

Context paragraphs:
It's Heavy in Here: It's Heavy in Here is the debut solo studio album by American singer-songwriter Eric Matthews.  It was released by Sub Pop Records on September 26, 1995.  A track from the album, "Fanfare", was released as a single in the UK only, but failed to chart.

Convict Stage: Convict Stage is a 1965 American Western film directed by Lesley Selander and written by Daniel Mainwaring.  The film stars Harry Lauter, Don "Red" Barry, Jodi Mitchell, Hanna Landy, Joe Patridge and Eric Matthews.  The film was released on June 17, 1965, by 20th Century Fox.

Eric Matthews (wrestler): Eric Matthews (born 1933) was a former wrestler from New Zealand.

Will Friedle: William Alan "Will" Friedle (born August 11, 1976) is an American actor, voice actor and comedian.  He is best known for his comedic roles, most notably the underachieving elder brother Eric Matthews on the long-running TV sitcom "Boy Meets World" from 1993 to 2000.  More recently, he has voiced a number of animated characters such as Terry McGinnis/Batman, the title character of "Batman Beyond", and Ron Stoppable of "Kim Possible".  He voices Deadpool in "Ultimate Spider-Man" and Star-Lord in the animated version of "Guardians of the Galaxy", replacing Chris Cox.  He also performed the voices of Doyle in "The Secret Saturdays", Lion-O in the rebooted "ThunderCats" series, and Blue Beetle on "".  One of his most recent roles has been the speaking voice of Bumblebee in the final episode of "" and the movie "" and in the sequel series , as well as in "".

Saw IV: Saw IV is a 2007 American-Canadian horror film and the fourth installment in the "Saw" franchise.  It was directed by Darren Lynn Bousman and written by newcomers Marcus Dunstan, Patrick Melton, and Thomas Fenton.  It stars Tobin Bell, Scott Patterson, Costas Mandylor, Betsy Russell, and Lyriq Bent.

Cardinal (Cardinal album): Cardinal is the first album from the Eric Matthews and Richard Davies collaboration Cardinal.

Eric Matthews (Saw): Detective Eric Matthews (originally scripted to be named Eric Mason) is a fictional character from the "Saw" franchise.  He first appeared in a fake documentary entitled, "Full Disclosure Report: Piecing Together Jigsaw", featured on the Uncut Edition of the original film.  He officially appears in "Saw II", "Saw III", and "Saw IV".  It was originally stated that Donnie Wahlberg (who portrayed Eric Matthews) would not be reprising his role in "Saw III" due to creative differences, but this turned out to be a hoax conceived by Lions Gate Entertainment to throw off fans of the series trying to dig up details on the film.

Richard Davies (musician): Richard Davies is an Australian-American musician.  He first came to prominence in the early 1990s as leader of the Australian band The Moles.  Upon moving to the United States, Davies joined with Eric Matthews to form Cardinal, whose debut album, "Cardinal," was released by Flydaddy in 1994.  He has since released several solo albums including "There's Never Been a Crowd Like This" (1996), "Telegraph" (1998), and "Barbarians" (2000).  In 2009 Davies and Guided by Voices front man Robert Pollard, collaborating under the name Cosmos, released an album, "Jar of Jam / Ton of Bricks."  In 2012 Davies and Matthews reformed Cardinal and released a second album, "Hymns."

Advanced Distributed Learning Workforce Co-Lab: The Advanced Distributed Learning Workforce Co-Lab was founded in 2003 under a joint agreement between the United States Department of Defense and the University of Memphis FedEx Institute of Technology.  Under the Advanced Distributed Learning Initiative, the lab was founded and directed by Eric Matthews and Dr. Xiangen Hu.  The Workforce Co-Lab has been charged by the U.S. Department of Defense to help business and industry adapt Advanced Distributed Learning technologies into their worker training and development programs.  Located in Memphis, Tennessee, the Co-Lab is under the direction of Dr. Xiangen Hu and Dr. Daniel Rehak and is affiliated with the University of Memphis.

Eric Matthews (musician): Eric Matthews (born January 12, 1969, in Compton, California) is an American composer, musician, recording artist, and record producer.

Supporting paragraphs: Eric Matthews (Saw) Saw IV
Answer: Darren Lynn Bousman