In 2004, to inform the drafting of memos on US policy against torture, Daniel Levin, who replaced Jack Goldsmith at the Office of Legal Counsel, underwent waterboarding at a DC-area military base. He found the experience terrifying and thought that it clearly simulated drowning.

The White House was not pleased, and when Gonzales become AG, sources say Levin was "forced out."

ABC offers its own video of simulated waterboarding. (It seems these things are a dime a dozen, nowadays.)