The song "Andvari" was also used in the 2010 film Remember Me.In 2001, Sigur Rós christened their newly completed studio by recording an EP called Rímur with an Icelandic fisherman named Steindór Andersen. The last song on the EP, "Lækurinn", is a duet with Sigurður Sigurðarson.In the movie, the band members express their interpretation of "Iceland".The film revolves around three main elements; the band playing live, the Icelandic nature shaping their music, along with interviews, where they tell the viewers what it was like play at home in addition to sharing their overall experience of the tour.An extended Sæglópur EP () was released in July 2006 in most parts of the world and in August in the United States.Its original release was scheduled in May, but because of the sudden demand of "Hoppípolla" it was pushed back from that date.Sigur Rós recorded three new songs to appear on the EP ("Refur", "Ó friður", and "Kafari").In July 2006, Sigur Rós finished a major world tour with stops in Europe, the United States (where they played a headline show at the Hollywood Bowl), Canada, Australia, New Zealand, Hong Kong and Japan.
"Hoppípolla" was used in the trailers for the BBC's natural history series Planet Earth in 2006, as well as the closing credits for the 2006 FA Cup final, ITV's coverage of the 2006 Oxford and Cambridge Boat Race, advertisements for the BBC's coverage of England games during the 2006 FIFA World Cup, on television advertisements for RTÉ's Gaelic games coverage in Ireland, and on an advertisement for Oxfam.
The band's name is Icelandic wordplay: while the individual words Sigur and Rós mean, respectively, Victory and Rose, "Victory Rose" wouldn't be grammatically correct; the name is actually borrowed from Jónsi's younger sister Sigurrós, who was born a few days before the band was formed, They soon won a record deal with the local Sugarcubes-owned record label Bad Taste, because they thought the falsetto vocals were very cute and would appeal to teenage girls. This name is also Icelandic wordplay: Vonbrigði means "disappointment", but Von brigði means "variations on Von".
The band was joined by Kjartan Sveinsson on keyboards in 1998.
Upon return to their homeland, Sigur Rós provided a series of free surprise outdoor concerts throughout Iceland in July and August, playing in various venues such as abandoned bunkers and community coffee shops, all of which were included in the 2007 documentary film Heima. S.) Heima, a live DVD of the previous summer’s Iceland tour, was released.
They also performed twice in the United States in February. Just prior to the release of Hvarf/Heim, on 29 October, a single named "Hljómalind" was released.