It’s safe to say that most members of the audience at the Johnson Museum’s screening of Heima Friday night have been dreaming of rolling tundra, dramatic skies and fair isle sweaters ever since. The documentary follows the band Sigur Ros during their two-week series of free, unannounced concerts across their native Iceland in the summer of 2006. The Iceland concerts marked the end of the band’s world tour for Takk ..., their fourth album.