After playing the depressed Justine in Lars von Trier's 'Melancholia,' it's nice to see actress Kirsten Dunst smiling a little. In 'We All Go Back to Where We Belong,' the latest (and, ultimately, final) music video from R.E.M., the Georgia-based band -- that broke up last month after playing together for three decades -- turns the camera squarely on Dunst. For three-and-a-half minutes, she laughs, smiles, and tears up about ... well, that's unclear. Is it Michael Stipe's soothing voice? Is it the fact that this music video is only in black and white? Watch ahead and judge for yourself.