A US military person once pulled a gun on me when I ducked under some tape to avoid zig-zagging around. That was in London. Since I was to be an invited speaker at an International Bar Association conference in UCLA I was less than favourably impressed.

Then there was the immigration official who threatened to exclude me from the USA - I was on my way to meetings with Paramount - when he said "Well Richard..." and I said "That's Mr Bridge to you...".