Prof. Tawatnuntachai pointed me towards 
<a href="http://www.compustat.com/">Compustat</a>, which is a database of 
stocks and the info from their 10-K/Q balance, income, and cash flows 
statements. The slick part is they've built access to the database to be
dumped, so you can easily export data from Compustat and import it into 
a local table in your RDBMS for futzing around with it.