defintiely the Spanish Inquistion, because thier first weapon is suprise, suprise and blah, blah, blah!
Seriously, though, I think the coalition should do the interrogating, becuase we have the CIA, FBI, NSA, ATF, Dept. HS, FCC, FDA, et al, and we could certainly do better than any 'provisional government' ;-), but the Iraqis should get to put him on trial.
or they could take the advise of an Iraqi citizen I heard on NPR this morning. He suggested they put Saddam in a cage and let the Iraqi people spit on him till he drowns. Yikes!!! That's inventive.