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Revisit collects tweets related to a topic of your choosing, and displays them along a timeline. Tweets that receive more retweets or replies are displayed near the center of the stream, and have larger icons.
It's not a static image, though: When a new related tweet arrives, it is highlighted; you can see its content and the relation to other tweets on the timeline. When there are no new tweets, a tweet is randomly chosen from the bunch.
The result is a nifty, animated visualization that can provide great background on a conference or a presentation. To make it even more attractive, you can type in a custom title and switch to full screen.
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[via Infosthetics]