Some context: Gutfeld was born in San Mateo, California, the son of Jacqueline Bernice "Jackie" (nee Cauhape) and Alfred Jack Gutfeld. His father was of German Jewish-Catholic and Irish descent, while his mother was of Irish, French, and Mexican ancestry. He attended Junipero Serra High School and the University of California, Berkeley, graduating in 1987 with a B.A. in English.
After college he had an internship at The American Spectator, as an assistant to conservative writer R. Emmett Tyrrell. He then worked as a staff writer at Prevention magazine and in Emmaus, Pennsylvania, as an editor at various Rodale Press magazines. In 1995 he became a staff writer at Men's Health. He was promoted to editor in chief of Men's Health in 1999. A year later, he was replaced by David Zinczenko. Gutfeld then became editor in chief of Stuff, increasing circulation from 750,000 to 1.2 million during his tenure. In 2003 he hired several dwarfs to attend a conference of the "Magazine Publishers of America" on the topic of "buzz", with instructions to be as loud and annoying as possible. The stunt generated publicity but led to Gutfeld's being fired soon afterward; he was then made head of "brain development" at Dennis Publishing.  He edited Maxim magazine in the UK from 2004 to 2006. Gutfeld's contract expired without renewal after losses in readership under his tenure.  Gutfeld was one of the first posting contributors to The Huffington Post from its launch in 2005 until October 2008; frequent targets of his sarcasm included his colleagues Deepak Chopra, Cenk Uygur, Arianna Huffington, and Huffington Post bloggers. Many of his Huffington Post commentaries/blogs are available on its website. Gutfeld has his own blog site, The Daily Gut.  Beginning on February 5, 2007, Gutfeld hosted the hour-long Fox News Channel late-night program, Red Eye w/ Greg Gutfeld. From 2007 to 2013, Bill Schulz served as Gutfeld's "sidekick" and Andy Levy as the show's ombudsman. Schulz was Gutfeld's colleague at Stuff magazine and Levy was a fellow blogger at The Huffington Post. On July 11, 2011, Gutfeld became a co-host/panelist on the Fox News political opinion discussion program The Five. The program airs weekdays at 5 p.m. ET. Gutfeld left Red Eye in February 2015, to host a new weekend show on Fox News. He was replaced on Red Eye by Tom Shillue. In May 2015, it was announced that Gutfeld would be getting his own late-night show called The Greg Gutfeld Show, which debuted on May 31, at 10 p.m. ET.
Which of his work was noteworthy?
A: Gutfeld then became editor in chief of Stuff, increasing circulation from 750,000 to 1.2 million during his tenure.

Some context: Rhapsody of Fire (formerly known as Rhapsody) is an Italian symphonic power metal band created by Luca Turilli and Alex Staropoli, widely seen as a pioneer of the symphonic power metal subgenre. Since forming in 1993 as Thundercross, the band has released twelve studio albums, two live albums, two EPs, and a Live DVD. Rhapsody of Fire is known for its conceptual lyrics that constitute a fantasy story throughout all of their albums from 1997 to 2011. After using the moniker of Rhapsody for nearly ten years, the band changed their name to Rhapsody of Fire in 2006 due to trademark issues.
In the spring Rhapsody started their first tour, starting in Sweden. They performed with Stratovarius and Sonata Arctica in Spring 2000 supported by their new drummer Alex Holzwarth.  After the tour they began recording their new album, Dawn of Victory. The first single "Holy Thunderforce" was released in 2000 with some success. The new album showed Rhapsody in a whole new light, with a more aggressive style and sped-up tempo. It continued the third part of the Emerald Sword Saga, and the orchestra still played an important part of the album, with songs such as "Lux Triumphans", "The Village of Dwarves" and "The Bloody Rage of the Titans", played beside more bombastic melodies as "Dawn of Victory", "Triumph for My Magic Steel", "Dargor, Shadowlord of the Black Mountain" and "Holy Thunderforce". It was more successful than any of their previous outings, and "Dawn of Victory" ranked at #32 in the German charts, while in Japan it peaked in 4th place. In early summer 2001, Rhapsody toured through South America and Europe.  Rain of a Thousand Flames served as a bridge between the last part of the Emerald Sword Saga and Power of the Dragonflame. Power of the Dragonflame was released in February 2002 and saw incredible success around the world. Marking the end of the Emerald Sword Saga, it contained soft ballads, upbeat metal melodies, and the epic 19-minute-long concluding song, "Gargoyles, Angels of Darkness". The band was joined by another two members, Patrice Guers (bass) and Dominique Leurquin (guitars). Alex Holzwarth, who had been playing drums for Rhapsody onstage since 2000 was listed in the official band line-up on these releases, although Holzwarth has played drums in the studio since The Dark Secret EP.
Why was this so important
A:
They performed with Stratovarius and Sonata Arctica in Spring 2000 supported by their new drummer Alex Holzwarth.