Hm, this band, Dr. Dog, is kind of cool in a weird and original way. They have a song that seems to be heavily influenced by the likes of both the Beach Boys and Pavement -- really loose and rough, but with a poppy edge. Although they are neither from California (like the Beach Boys or Pavement) nor Australia (like Australia in Helsinki), they have an approach to making music that is similar to Architecture in Helsinki in that they have a large band (20 members at times), yet always change their lineup, making for an interesting sound that is always changing.
Or maybe that is more like Broken Social Scene.
The band hails from Philadelphia, and you can buy their newest (and best) album here.