After recording career-highs in goals, assists and points, as well as being voted the Panthers' most valuable player by the team's fans in 2008–09, he suffered two concussions the following season.

During his time with the Development Program, he committed to an athletic scholarship with the Michigan State Spartans of the Central Collegiate Hockey Association (CCHA).

During his junior year,[notes 1] he and teammate Bryan Lerg set a Spartans record for the fastest two goals scored in a game (five seconds apart).

[3] In the first month of his senior year, Booth played in his 100th career college game in a contest against the North Dakota Fighting Sioux on October 16, 2005.

His strong offensive production in the second half included an 11-game point-scoring streak that was broken on the last regular season game against the Miami RedHawks.

Facing the Miami RedHawks in the final, Booth scored the game-winning goal six minutes in the second period, securing a 2–1 win for Michigan State.

His efforts made him the fourth player in team history to register two hat-tricks in one season, after Pavel Bure, Ray Sheppard and Olli Jokinen.

[32] Booth bettered that single-game total during the last contest of the regular season, scoring two goals and three assists for a personal best five-point effort in a 7–4 win against the Washington Capitals on April 11, 2009.

[35] During his breakout season, Booth became a favorite among team followers; home fans at BankAtlantic Center were known to cheer "Booooth" when he touched the puck during games.

Panthers General Manager Randy Sexton and defenceman Keith Ballard voiced their opinion that Richards' hit was directed at the head while knowing Booth was in a vulnerable position, warranting a suspension.

[39] The Flyers captain expressed concern for Booth's health both in the media and to Panthers Head Coach Peter DeBoer personally, but asserted that he was not intending to hurt him.

Several months after Booth's October 2009 concussion, Boston Bruins forward Marc Savard was hit by Matt Cooke in a similar fashion on March 7.

Following the game, Panthers forward Nathan Horton asserted that "It wasn't a dirty hit"; Špaček expressed concern for Booth, but explained that "when he turned I was standing right there and basically he just ran at me.

[49] As a team, the Panthers continued to struggle and General Manager Dale Tallon began trading away many of their veteran players towards the end of the season; they finished with the worst record in the East.

[51] Tallon described the deal as a performance-based trade;[52][53] Booth had registered one assist over the first six games of the season and had a team-worst –6 plus-minus rating while being demoted to the third line.

[55] The following month, Booth suffered a right medial collateral ligament (MCL) injury after a knee-on-knee hit from Colorado Avalanche forward Kevin Porter during a game on December 6, 2011.

Porter received a five-minute major and game misconduct for the play,[56] while a subsequent hearing with NHL disciplinarian Brendan Shanahan resulted in a four-game suspension.

He recorded one assist over five games as the first-seeded and back-to-back Presidents' Trophy-winning Canucks were eliminated in the first round by the eighth-seeded and eventual Stanley Cup champion Kings.

[65] However, Booth would record his first point as a Leaf three games later, an assist on a goal scored by line-mate Richard Pánik in a 5–2 victory over his former team, the Canucks.

As a free agent over the following summer, Booth agreed to a return to the Florida Panthers in accepting an invitation to training camp on a professional try-out contract on September 9, 2015.

On November 26, 2015, Booth belatedly signed his first contract abroad, agreeing to a one-year deal with Russian club, Admiral Vladivostok of the Kontinental Hockey League for the remainder of the 2015–16 season.

Booth returned home during the off-season and signed a professional try-out contract to attend the training camp of the Anaheim Ducks on September 20, 2016.

[68] After his release from the Ducks pre-season roster, Booth later opted to return to the KHL, continuing with Avangard Omsk on November 17, 2016.

[69] After two years in the KHL, Booth signed a PTO with the Detroit Red Wings on August 30, 2017, marking his third attempt to return to the NHL.

[72] As a free agent at the mid-point of the 2018–19 season, Booth returned to continue his professional career abroad, agreeing to a contract for the remainder of the year with Belarusian outfit, HC Dinamo Minsk of the KHL, on December 5, 2018.

During his tenure with the United States National Team Development Program, Booth competed at the 2002 IIHF World U18 Championship, held in Trnava and Piešťany, Slovakia.

Leading 2–1 with a minute remaining, the United States pulled their goalie and Zach Parise scored with 30 seconds left to capture the gold medal.

[74] Two years later (now a member of the Michigan State Spartans), Booth moved on to the under-20 level, competing at the 2004 IIHF World Junior Championships, held in Helsinki and Hämeenlinna, Finland.

[2] Following Booth's second season in the NHL with the Florida Panthers, he was named to his first United States men's team for the 2008 IIHF World Championships, held in Halifax and Quebec City, Canada.

[4] He has listed favorite players as a child as Red Wings forwards Steve Yzerman and Brendan Shanahan,[2] as well as Keith Tkachuk, who played for the Winnipeg Jets/Phoenix Coyotes franchise, St. Louis Blues and Atlanta Thrashers.