Talking of shouting: Here's a BBC journalist losing the plot and shouting at a scientologist:

http://www.youtube.com/watch?v=hxqR5NPhtLI&mode=related&search=

In John Sweeney's defence though, he was subject to a lot, and I mean *a lot* of provocation in the run up to that -- he was followed in unmarked cars, that chap he was shouting at had previously turned up to an interview the journalist was doing with someone else, uninvited, and interrupted the interview (the journalist had also been followed to the interview location). The chap he shouted at had turned up to his hotel at midnight, again uninvited, and without being informed which hotel they were staying at, so the chap had used whatever methods to hunt down the journalist and find out his hotel before turning up uninvited at midnight. And so on. And so on.