Moyers on Impeachment, Bill Moyers Journal, 13 July 2007.

Tough Talk on Impeachment, Bill Moyers Journal, 13 July 2007. (See also links at bottom of webpage.)
Moyers' discussion with Bruce Fein (Impeach Cheney, Slate.com, 27 June 2007; Executive Nonsense, Slate.com, 11 July 2007)
and John Nichols (writer at The Nation, author of The Genius of Impeachment: The Founders' Cure for Royalism).