Before college, Gill was a notable quarterback at Nashoba Regional High School in Bolton, Massachusetts. After being drafted in the eighth round, 207th overall in the 1993 NHL Entry Draft by the Boston Bruins, Gill spent four years playing for Providence College. He entered the NHL during the 1997–98 NHL season and played over 600 regular season games over eight seasons with the Bruins. During the 2004–05 NHL lockout, he played for Lukko in the FinnishSM-liiga. On July 1, 2006, the Toronto Maple Leafs signed Gill to a three-year deal. He had some of the best numbers of his career in Toronto while working on discipline and lowering his penalty minutes. On February 26, 2008, Toronto traded him to the Pittsburgh Penguins for a second round draft pick in the 2008 NHL Entry Draft and a fifth round pick in the 2009 NHL Entry Draft. The Penguins traded for him on the same day that they received Marian Hossa from the Atlanta Thrashers. He helped them win the Eastern Conference and to advance to the 2008 Stanley Cup Finals, where they lost in six games. On June 12, 2009, Gill hoisted the Stanley Cup over his head after the visiting Pittsburgh Penguins defeated the Detroit Red Wings at Joe Louis Arena in seven games. On July 1, 2009, he signed a two-year, $4.5 million deal with the Montreal Canadiens, and after the 2010-11 season he re-signed with the Canadiens on a one-year deal. On February 17, 2012 Gill and a conditional fifth-round pick in 2013 were traded to the Nashville Predators for Blake Geoffrion, Robert Slaney, and a second-round draft pick in 2012. On June 28, 2012 Gill re-signed with the Nashville Predators on a two-year, $4 million deal. During the lockout-shortened 2012–13 season, Gill was scoreless over 32 games, as the Predators failed to reach the playoffs. On July 2, 2013, Nashville placed Gill on waivers in order to complete a buyout of the final year of his contract. On September 7, 2013 the Philadelphia Flyers signed Gill to a professional tryout contract and subsequently signed him to a one-year, $700,000 contract on October 1, 2013. On April 23, 2015, Gill announced his retirement after 16 seasons in the NHL.
On October 16, 2015, the Florida Panthers announced that they had hired Gill as their manager of player development.
Personal life
Gill grew up in Bolton, Massachusetts.Attended Nashoba Regional High School He is married to Anne and has three children: daughters Sophie, born in 2007, and Isabelle, born in September 2004; and son Talon, born in October 2011.
