So many people have noted the parallels between Vietnam and Iraq, and now between Watergate and Rove's Plame Outing, I figure it's about time to start casting for All the President's Men II.
I'll start things off, feel free to fill in the rest:
Vietnam is played by Iraq
The Pentagon Papers are played by the Downing Street Memos
Richard Nixon is played by George W. Bush
HR Halderman is played by Karl Rove
John Erlichman is played by Scooter Libby
John Dean is played by Alberto Gonzales
John Mitchell is played by John Ashcroft
The 18 Minute Gap is played by the 12 Hour Delay
(others can take it from there...)