Hey, this is really big. The folks at the Center for Responsive Politics, backed by the Sunlight Foundation, have built a database which allows anyone to take a look at the finances of Congressmen and to do some serious investigative journalism.
Members of Congress have millions of dollars invested in politically influential industries, which they also regulate, including real estate ($261.2 million); pharmaceuticals and health products (at least $25.5 million in holdings); computers and internet ($21.5 million); the oil and gas industry ($19.5 million); beer, wine and liquor ($8.8 million); and tobacco ($8.2 million).
Fedspending.org takes you to the grants and contracts database developed by OMB Watch.
Opensecrets.org takes you to the personal financial disclosure database developed my CRP.