You know Rick Perry as the current Secretary of Energy and former Texas governor, but did you know he once played drums with ZZ Top? Hear from Perry himself in the season 3 premiere of Direct Current as he sits down with our hosts to discuss everything from supercomputers to "Dancing with the Stars."

Also, we bid a fond farewell to one of our show's original producers.

[Editor's Note: This interview was recorded shortly before the unveiling of the Summit supercomputer at Oak Ridge National Laboratory, which as of June 2018 claimed the title of fastest supercomputer in the world.]