Financials arent exactly my strong suit, but for those of you that do appreciate the power of numbers, you may have fun playing in these. You may also find some thing of interest for the rest of us. You can drop those in the comments on here so we can keep the disocveries all in one place. Might be a good idea to state in the comments which one you are digging in so that someone else can pick a different one. Might help finding things faster.
This is the original source of zip links - http://clerk.house.gov/public_disc/financial.aspx
Each .ZIP contains tab-delimited and XML parse-able financial disclosures of all house reps.
Download Financial Disclosure Reports by Year: