Conversation so far:
What was one of the connected terrorist acts to Anwar al-Awlaki?
The Fort Hood Shooter was a connected terrorist to Anwar al-Awlaki.
What was significant about Anwar al Awlaki's lectures being heard?
Even following his death, Anwar al-Awlaki has continued to inspire his devotees to carry out terrorist attacks.
Are there any other interesting aspects about this article about Anwar al-Awlaki besides his lectures being heard?
Anwar al-Awlaki's proficiency as a public speaker and command of the English language helped him attract followers who did not speak Arabic.
Did Anwar al-Awlaki target U.S. Muslims?
Charles Allen warned that Anwar al-Awlaki targets U.S. Muslims with radical online lectures encouraging terrorist attacks from his new home in Yemen.“
What other terrorist acts were connected to Anwar al-Awlaki besides the Fort Hood Shooter?
The Christmas Day Underwear Bomber was another terrorist connected to Anwar al-Awlaki.

Question: Which terrorism plots was he associated with?
Self-contained rewrite: Which terrorism plots was  Anwar al-Awlaki associated with?