Jon Stewart has announced he is stepping down as the host of satirical news programme The Daily Show after 17 years. In that time, some of the comedian's most memorable moments were actually when he was being dead serious.
When he welcomed viewers in his first show after 9/11:
They said to get back to work. There were no jobs available for a man in the foetal position under his desk crying - which I gladly would have taken - so I come back here.