Question: Who was the 16 year head football coach at University of Oklahoma, who won a title in 2000 after his departure?
Context: Barry Layne Switzer (born October 5, 1937) is a former American football player and coach.  He served for 16 years as head football coach at the University of Oklahoma and four years as head coach for the Dallas Cowboys of the National Football League (NFL).  He helped the Cowboys win Super Bowl XXX against the Pittsburgh Steelers.  He has one of the highest winning percentages of any college football coach in history, and is one of only three head coaches to win both a college football national championship and a Super Bowl, the others being Jimmy Johnson and Pete Carroll. Garin Higgins (born October 11, 1969) is an American football coach and former player.  He is the head football coach at Emporia State University in Emporia, Kansas, a position he has held since the 2007 season.  Higgins previously served as the head football coach at Northwestern Oklahoma State University from 2000 to 2004.  His Northwestern Oklahoma State Rangers finished as runners-up in the NAIA Football National Championship in 2000 and 2003.  Higgins worked as co-offensive coordinator at Minnesota State University, Mankato and offensive coordinator at Northeastern State University in 2006. Tom Keele (born c. 1933) is a former American football coach.  He served as the head football coach at California State University, Northridge from 1979 to 1985, compiling a record of 31–42–1.  Keele graduated from Jefferson High School in Portland Oregon in 1951.  He attended the University of Oregon, where he played football for the Oregon Webfoots as a tackle from 1957 to 1959.  Keele began his coaching career in 1960 at North Eugene High School in Eugene, Oregon, working two years as an assistant football coach and sophomore basketball coach.  He moved to Oregon City High School in Oregon City, Oregon in 1962, serving as head football coach and leading his team to a 9–1–1 record.  The following year, he was hired as head football coach at the newly-formed Sheldon High School in Eugene. Bo Atterberry (born February 21, 1975) is an American football coach.  He is the head football coach at Southeastern Oklahoma State University.  On December 4, 2013 Atterberry was introduced as the 19th head football coach in Southeastern Oklahoma State 's history.  Atterberry led the 2014 Southeastern team to their first winning season since 2009 in his first year as head coach.  He was previously the head coach at Texas A&M University–Kingsville.  After taking over the Javelinas program in 2007 he went on to compile a 41–28 record over his tenure while guiding Texas A&M–Kingsville to a Lone Star Conference (LSC) championship in 2009 as well as back-to-back NCAA Division II playoff appearances. Theodore George "Ted" Karras Jr. (born December 10, 1964) is an American football coach and former player.  He was most recently head football coach at Walsh University, a position he held from December 2012 to November 2016.  Previously, Karras served as the first head football coach at Marian University in Indianapolis, Indiana.  He held that position from the program's inception in 2007 through the 2012 season in which Marian won the NAIA Football National Championship.  Karras played college football as a defensive tackle at Northwestern University from 1983 to 1986 and for one year (1987) in the National Football League (NFL) with the Washington Redskins.  From 2003 to 2005, he served as the head football coach at Rose-Hulman Institute of Technology.  His father, Ted Karras Sr., played for the Chicago Bears in the 1960s.  His uncles also played in the NFL: Alex Karras for the Detroit Lions and Lou Karras for the Washington Redskins. Floyd Gass (January 31, 1927 – March 3, 2006) was an American football and basketball player, coach, and college athletics administrator.  He served as the head football coach at Austin College from 1961 to 1968, having previously been offensive coordinator, and at Oklahoma State University–Stillwater from 1969 to 1971, compiling a career college football record of 56–46–2.  He was voted the Big Eight Conference Coach of the Year in 1969.  His record was 13–18–1 in his three seasons at Oklahoma State.  Gass was also the head basketball coach at Austin College from 1955 to 1962, tallying a mark of 71–80, and served as athletic director.  He was an alumnus of Oklahoma State, and played football and basketball while attending the university.  Gass was one of three head football coaches at Oklahoma State to have played for Oklahoma State, along with Jim Lookabaugh and current head coach Mike Gundy.  Gass served as athletics director at OSU from 1971 through 1978, when he left OSU to pursue other business opportunities.  Gass died on March 3, 2006, at the age of 79. The 2000 NCAA Division I-A football season ended with the Oklahoma Sooners claiming their first national championship and their first conference championship since the departure of head coach Barry Switzer. Ernest T. Jones (born January 18, 1970) is the current head coach at ASA Miami, a two-year college starting its first football season in 2015.  He was briefly running backs coach for the University of Connecticut Huskies football team.  He was head football coach at Alcorn State University.  He was named the head football coach after the 2007 season and served as head coach in 2008.  He was controversially fired from this position in December 2008.  He returned to the University of Cincinnati as the Director of Player Services in 2009.  For the 2010 he will be an assistant coach at the University at Buffalo under former University of Cincinnati assistant coach and now UB head football Coach Jeff Quinn. Tim McCarty is an American football coach and former player.  He is currently the head football coach at East Central University in Ada, Oklahoma, a position he first held from 2004 to 2005 and then resume in 2009.  From 1999 to 2003 McCarty was the head football coach at Tabor College in Hillsboro, Kansas.  His two tenures at East Central were sepeated by a three-year stint at the assistant head football coach at Kansas State University. Willie Fritz (born April 2, 1960) is an American football coach and former player.  He is the current head coach at Tulane University.  From 2014 to 2015, he was head coach at Georgia Southern University.  From 2010 to 2013, he was the head football coach at Sam Houston State University.  From 1997 to 2009, Fritz served as the head football coach at the University of Central Missouri.  From 1993 to 1996, he was the head football coach at Blinn College, a junior college in Brenham, Texas.
Answer: Barry Layne Switzer