A beta version of Google Finance is now up and running, and it has some tools that may be of use to securities litigators.  In particular, check out the charting function that integrates and plots news stories.  The charts are also interactive, and permit you to change the time window by simply sliding the arrow in the upper right corner of the chart.  This chart for Mills Corp., recently made a defendant in a securities class action, is a good example.  Stretch the chart out to see the bad news, the lawsuits that followed, etc.

In addition to news stories on a company, the site also aggregates blog posts, as well.  It also lets you search quickly for executives of a company in its specific context of finance/public companies, eliminating the million other search results you'd get if you plugged something like "Robert Iger" into Google.