[1] He has sold over one million records worldwide as a solo artist and worked in film, television, and stage, including performing on Broadway.

[3] His parents were Thomas McIntyre, a union official, and his wife Katherine (née Bowen) a community theater actress.

They eventually became one of the most successful boy bands of the late 20th century, producing two number one albums on the US Billboard 200 chart.

This 1995 film, starring Joel Grey and Jean Louisa Kelly, was released in theatres five years later.

He then chose the album's title track as a single and took it to local Boston DJs, which eventually garnered the song national airplay.

The album was re-released on Sony's Work Records and sold more than a million copies around the world and the single "Stay The Same" peaked at No.

Also in 1999, McIntyre recorded the song "Remember Me" for the film Southie, which starred former bandmate Donnie Wahlberg.

In 2004, he starred in the film Tony n' Tina's Wedding alongside Mila Kunis and also played Fiyero Tigelaar, the leading male role in the Broadway musical Wicked for which he received rave reviews.

McIntyre appeared as Arthur "Fonzie" Fonzarelli in Happy Days, a musical based on the hit TV show at the Falcon Theater in Los Angeles from February 15 to March 12, 2006, and a second run from June 23 to August 13, 2006.

On November 2, 2011, McIntyre guest starred on a season 6 episode of the detective comedy Psych, titled "The Amazing Psych-Man & Tap Man, Issue #2".

On February 4, 2019, McIntyre returned to Broadway as the character Dr. Jim Pomatter in the musical Waitress and he continued in this role until April 7, 2019.

[10] On March 24, 2022, McIntyre originated the role of Johnny in a new musical production of The Wanderer at the Paper Mill Playhouse in Millburn, New Jersey.

[11] On April 15, 2013, McIntyre competed in the Boston Marathon, in which he ran to raise awareness of Alzheimer's in honor of his mother, who died on November 30, 2014.

[12] On May 5, 2021, McIntyre announced on an Instagram Live Stream, along with Debbie Gibson, the release of the highly expected collaborative single "Lost In Your Eyes, The Duet on June 4, 2021; they also announced a mini residence in Las Vegas, a 4-night limited engagement at the Venetian Resort (August 26, 27, 28 & 29, 2021) [13] McIntyre married wife Barrett Williams, a former real estate agent on August 9, 2003, in New York City, one year after they met.