I've having a lot of fun with long shutter speeds. What I did is set it for a 30 sec exposure and waved about my mobile phone torch. Try it - its fun! There are a couple of result on here, but many more at my Flickr account.
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hey! i just found your gallery through ubuntu forums, and wanted to tell you that your stuff is really awesome. i havent looked through everything yet, but get ready for some +fav's