If you do a GOOGLE search on Ambassador Joseph Wilson you can see that he was interviewed and gave several speeches before and after the SOTU address, the lead up to the war and during the war and NOWHERE does this guy talk about his mission to Niger, his first mention is the NYT's editorial and it's so vague it's unbelievable.
This guy also was a employee of Al Gore and one of his speeches before the war was titled "The Case Against Regime Change in Iraq", He sounds like another Scott Ritter to me