There's an absolutely jaw-dropping photo of Comet McNaught, taken in Aukland, New Zealand, at spaceweather.com. Go look. This comet's tail is so large and sweeping that observers are managing to spot the further reaches of it in the northern hemisphere sky... Spaceweather has a gallery with many more images.
P.S. The particular photo we are pointing to will only be on top for a day. It's this one by Jamie Newman, and will remain available from the gallery page.