Oh Mercy are a indie/pop/rock-ish band hailing from Melbourne (my hometown!). I wasn't sure what forum to post this thread in either so yeah...
Their newer stuff is great, lots of harmonies between the lead vocalist and the female bassist which sound amazing, but I couldn't find any good quality versions of it on YouTube! Link available
(I realise this is the same song as the first but I thought I'd include another live clip as they are an absolute pleasure to hear live!)