Dow Down 650 Points, Plug Power CEO & AEP CEO

The Dow fell 650 points and Jim Cramer's parsing through today's tape to help you find areas of opportunity in this market. Then after pulling back today, have investors spotted a buying opportunity in Plug Power? Cramer's going one-on-one with the company's CEO to learn more about the future of hydrogen fuel cells. Plus in a sea of red, Cramer's found a glimmer of green in AEP. Could today's performance be a sign of what's to come for the stock? Cramer's talking renewable energy and the future of the industry with the company's top brass.