Main article: Iowa (album)
After the success of their debut, Slipknot decided to enter the studio again for a second album. By then, the band had created a huge fan base, and the expectations for their follow up album were great. They went back into the studio in early 2001 to work on a new album. Iowa, the band's second album with Roadrunner Records, was released on August 28, 2001. Jason Birchmeier of Allmusic said "It's really all you could ask for in a Slipknot album, and then some", and David Fricke of Rolling Stone called the album "the first great record of the nu metal era." It was also a commercial success, peaking at number three on the Billboard album charts, and at number one on the UK album chart. In mid-2001, the band once again toured with Ozzfest, and performed in the Kill The Industry tour in support of Iowa. The band also appeared in the concert scene of the 2002 movie Rollerball. In the same year, while touring Europe on their Iowa World Tour, the BBC said that Slipknot stole the show and proved entertaining after the band performed at Reading Festival in England. After touring Europe, the band performed at venues in Japan for the Japan Iowa Tour. In the same year, Slipknot released their second visual output with the release of their DVD Disasterpieces.
