The surprise hit of the download eraTim JonzeThe Guardian, Thursday 9 July 2009We all remember the big hits from the 90s, right? The Bittersweet Symphonies, the Hallelujahs, the Irises and the ... hang on ... Iris? By post-grunge rockers the Goo Goo Dolls? Never heard of it, you might think. But you almost certainly have.According to download-sales data compiled to mark iTunes UK's fifth birthday last month, the track is the fourth-biggest-selling 90s song. It's shifted more since 2004 than Angels and Wonderwall, despite the fact it missed the top 40 when it was first released in 1998 and only