One day after his father died of a heart attack or stroke, Favre decided to play in a December 22, 2003, Monday Night Football game against the Oakland Raiders.
The Packers traveled to Oakland where Favre passed for four touchdowns in the first half and 399 total yards in a 41–7 victory over the Raiders on international television (even receiving applause from "Raider Nation").
He completed 73.3% of his passes and finished the game with a passer rating of 154.9, having recorded a perfect 158.3 rating with four touchdowns and over 250 yards passing by halftime (a feat accomplished by only three other passers in NFL history).
Afterwards, Favre said, "I knew that my dad would have wanted me to play.
I love him so much and I love this game.
It's meant a great deal to me, to my dad, to my family, and I didn't expect this kind of performance.
But I know he was watching tonight."
After the game, he went to his father's funeral in Pass Christian, Mississippi.
Favre won an ESPY Award for his Monday Night Football performance.

A notable game in the 2004 season in which Favre and the Packers finished 10–6 was against the New York Giants.
During the game, Favre suffered a concussion.
He did not receive medical clearance to re-enter the game.
Despite the concussion, Favre threw a 28-yard touchdown to Javon Walker on a fourth down play.
Afterwards it was reported that Favre did not remember throwing the touchdown pass.
Favre also had two significant touchdown streaks of note during the season.
He had completed at least one touchdown pass in 36 consecutive games over the 2002–2004 seasons which at the time was the second longest streak in NFL history.
Also, during the 2004 post-season, he broke Dan Marino's record for consecutive games with at least one touchdown pass in the post season.

After the death of his father, a series of events related to Favre's family were reported in the media.
In October 2004, ten months after the death of Favre's father, his brother-in-law, Casey Tynes, was killed in an all-terrain vehicle accident on Favre's Mississippi property.

Soon after in 2004, Favre's wife, Deanna Favre, was diagnosed with breast cancer.
Following aggressive treatment through 2004, she recovered.
She created The Deanna Favre Hope Foundation which supports breast cancer education and women's breast imaging and diagnosis services for all women, including those who are medically underserved.

In late August 2005, Favre's family suffered another setback: Hurricane Katrina blew through Mississippi, destroying his family's home there; however, none of his family members were injured.
Brett and Deanna's property in Hattiesburg, Mississippi was also extensively damaged by the storm.
Favre elected to continue to play in the 2005 season.

For the 2005 season, despite throwing for over 3,000 yards for a record 14th consecutive time, Favre had a below average season with only 20 touchdown passes and a league-leading 29 interceptions.
The loss of guards Marco Rivera and Mike Wahle to free agency along with key injuries to Javon Walker, Ahman Green, Bubba Franks, among others, hampered Favre and the team.
His passer rating was 70.9, 31st in the NFL and the worst single season rating of his career.
After the disappointing season, many speculated that Favre would retire.
However, on April 26, 2006, Favre announced that he would remain with the team for the 2006 season.
Despite earlier comments that the 2006 season would be his last, Favre announced in a press conference on May 6, 2006, that he had not ruled out the possibility of returning beyond the 2006 season.

In the 2006 season, Favre suffered his first career shutout against the Chicago Bears in a 26–0 loss in Week 1.
Later in the season, the New England Patriots shut out the Packers in a game where he was injured before halftime and could not complete the game.
On September 24, he became just the second quarterback in NFL history to record 400 touchdown passes (Dan Marino being the first).
He connected with rookie wide receiver Greg Jennings on a 5-yard pass that Jennings turned into a 75-yard
One day after his father died of a heart attack or stroke, Favre decided to play in a December 22, 2003, Monday Night Football game against the Oakland Raiders. The Packers traveled to Oakland where Favre passed for four touchdowns in the first half and 399 total yards in a 41–7 victory over the Raiders on international television (even receiving applause from "Raider Nation"). He completed 73.3% of his passes and finished the game with a passer rating of 154.9, having recorded a perfect 158.3 rating with four touchdowns and over 250 yards passing by halftime (a feat accomplished by only three other passers in NFL history). Afterwards, Favre said, "I knew that my dad would have wanted me to play. I love him so much and I love this game. It's meant a great deal to me, to my dad, to my family, and I didn't expect this kind of performance. But I know he was watching tonight." After the game, he went to his father's funeral in Pass Christian, Mississippi. Favre won an ESPY Award for his Monday Night Football performance.
A notable game in the 2004 season in which Favre and the Packers finished 10–6 was against the New York Giants. During the game, Favre suffered a concussion. He did not receive medical clearance to re-enter the game. Despite the concussion, Favre threw a 28-yard touchdown to Javon Walker on a fourth down play. Afterwards it was reported that Favre did not remember throwing the touchdown pass. Favre also had two significant touchdown streaks of note during the season. He had completed at least one touchdown pass in 36 consecutive games over the 2002–2004 seasons which at the time was the second longest streak in NFL history. Also, during the 2004 post-season, he broke Dan Marino's record for consecutive games with at least one touchdown pass in the post season.
After the death of his father, a series of events related to Favre's family were reported in the media. In October 2004, ten months after the death of Favre's father, his brother-in-law, Casey Tynes, was killed in an all-terrain vehicle accident on Favre's Mississippi property.
Soon after in 2004, Favre's wife, Deanna Favre, was diagnosed with breast cancer. Following aggressive treatment through 2004, she recovered. She created The Deanna Favre Hope Foundation which supports breast cancer education and women's breast imaging and diagnosis services for all women, including those who are medically underserved.
In late August 2005, Favre's family suffered another setback: Hurricane Katrina blew through Mississippi, destroying his family's home there; however, none of his family members were injured. Brett and Deanna's property in Hattiesburg, Mississippi was also extensively damaged by the storm. Favre elected to continue to play in the 2005 season.
For the 2005 season, despite throwing for over 3,000 yards for a record 14th consecutive time, Favre had a below average season with only 20 touchdown passes and a league-leading 29 interceptions. The loss of guards Marco Rivera and Mike Wahle to free agency along with key injuries to Javon Walker, Ahman Green, Bubba Franks, among others, hampered Favre and the team. His passer rating was 70.9, 31st in the NFL and the worst single season rating of his career. After the disappointing season, many speculated that Favre would retire. However, on April 26, 2006, Favre announced that he would remain with the team for the 2006 season. Despite earlier comments that the 2006 season would be his last, Favre announced in a press conference on May 6, 2006, that he had not ruled out the possibility of returning beyond the 2006 season.
In the 2006 season, Favre suffered his first career shutout against the Chicago Bears in a 26–0 loss in Week 1. Later in the season, the New England Patriots shut out the Packers in a game where he was injured before halftime and could not complete the game. On September 24, he became just the second quarterback in NFL history to record 400 touchdown passes (Dan Marino being the first). He connected with rookie wide receiver Greg Jennings on a 5-yard pass that Jennings turned into a 75-yard
Brett Favre