In 1997 Enron sent a letter to every household in California informing users that they can switch their electrical provider to Enron. Some people blame Enron for the power crisis that hit California in 1999 and 2000. Enron filed for bankruptcy in late 2001.

You can now Download the actual letter that California residents received.

Here's an excerpt of the letter:
We're Enron - America's largest wholesale provider of electricity and natural gas. While you may not have heard of us yet, we've been in the energy business for over 70 years, serving utilities in California and around the country. And now we'd like to bring our expertise directly to you, with an offer we think you'll appreciate.