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Dion Almaer points us to the news that Google Code has added a source code viewer to the system that allows you to quickly look at the code for any project.
The Ajax-powered tool will allow you to highlight syntax, see revisions, and view diffs, a directory browsing tree and more. You can check out an example by taking a look at Google Gears, and it really couldn't be simpler, or faster. It's actually a little surprising that this tool wasn't available before now, but according to the above link to the Google Code blog, this was the work of an intern named Jenan Wise.