I missed some:
Before the rise of Usama bin Laden, Abu Nidal was widely regarded as the world's most ruthless terrorist. The Associated Press reported on August 22, 2002 that Nidal entered Iraq during the late 1990's "with the full knowledge and preparations of the Iraqi authorities." He lived there until August, 2002 when he died of between one and four gunshot wounds. It is believed by many that Abu Nidal was killed on the orders of Saddam Hussein although the Iraqi government claimed that Nidal had committed suicide.
On October 14, 2001, a former Iraqi army captain named Sabah Khodada granted an interview to the PBS television program "Frontline" in which he talked about a terrorist training camp in Iraq called Salman Pak. During this interview Khodada stated, "This camp is specialized in exporting terrorism to the whole world."
Saddam Hussein paid $25,000 bonuses to the families of Palestinian homicide bombers. "President Saddam Hussein has recently told the head of the Palestinian political office, Faroq al-Kaddoumi, his decision to raise the sum granted to each family of the martyrs of the Palestinian uprising to $25,000 instead of $10,000," Iraq's deputy prime minister Tariq Aziz declared on March 11, 2002. Mahmoud Besharat, who dispensed these funds across the West Bank, gratefully said: "You would have to ask President Saddam why he is being so generous. But he is a revolutionary and he wants this distinguished struggle, the intifada, to continue."
On February 13, 2003, the Philippine government expelled Iraqi diplomat Hisham al Hussein, the second secretary at Iraq's Manila embassy. Cell phone records indicated that the Iraqi diplomat had spoken with Abu Madja and Hamsiraji Sali, leaders of Abu Sayyaf, just before and just after this Al-Qaeda allied Islamic militant group conducted an attack in Zamboanga City. Abu Sayyaf's nail filled bomb exploded on October 2, 2002, injuring 23 individuals and killing two Filipinos plus killing U.S. Special Forces Sergeant First Class Mark Wayne Jackson, age 40. link link link
After the fall of Saddam's government, coalition forces found and destroyed a terrorist training camp located near Baghdad called Salman Pak. This terrorist training camp featured an airplane fuselage where Iraqi defectors had earlier reported foreign terrorists were being trained in hijacking aircraft.
On April 14, 2003, Abu Abbas was captured by U.S. Special Forces during a raid near Baghdad. Abbas had lived in Baghdad since 1994, where he was living under protection of Iraqi President Saddam Hussein.
Khala Khadr al-Salahat, accused of designing the bomb that destroyed Pan Am flight 103 over Lockerbie, Scotland in December 1988 (259 killed on board, 11 dead on the ground), also lived in Iraq. He surrendered to U.S. Marines in Baghdad on April 18, 2003.
On September 18, 2003, USA Today ran an article with the headline "U.S. says Iraq sheltered suspect in '93 WTC attack." The article reported that U.S. authorities have evidence Saddam Hussein's regime gave money and housing to Abdul Rahman Yasin, a suspect in the World Trade Center bombing in 1993. Military, intelligence and law enforcement officials reported finding a large cache of Arabic-language documents in Tikrit, Saddam's political stronghold. Some analysts have concluded that the documents show Saddam's government provided monthly payments and a home for Yasin.
Russian President Vladimir Putin said on June 18, 2004, "I can confirm that after the events of September 11, 2001, and up to the military operation in Iraq, Russian special services and Russian intelligence several times received ... information that official organs of Saddam's regime were preparing terrorist acts on the territory of the United States and beyond its borders, at U.S. military and civilian locations."