I love this graphical representation of what's hot in the news: newsmap.

[from newsmap description]

Newsmap is an application that visually reflects the constantly changing landscape of the Google News news aggregator. A treemap visualization algorithm helps display the enormous amount of information gathered by the aggregator. Treemaps are traditionally space-constrained visualizations of information. Newsmap's objective takes that goal a step further and provides a tool to divide information into quickly recognizable bands which, when presented together, reveal underlying patterns in news reporting across cultures and within news segments in constant change around the globe.
Newsmap does not pretend to replace the googlenews aggregator. It's objective is to simply demonstrate visually the relationships between data and the unseen patterns in news media. It is not thought to display an unbiased view of the news, on the contrary it is thought to ironically accentuate the bias of it.

I have it as an active window on my desktop. Great way to gestalt the news.

[pointer from Mike Davidson: Newsmap as a Model for Smart Aggregation]