I don't fly for business a huge amount, but I do so enough to notice certain trends.
My favourite is definitely the competition between all the other business travellers to see which of them can ignore the safety briefing at the start of a flight most fiercely.
Reading a book or newspaper, or racking up bonus points by using the Blackberrys they've already been asked to switch off.
I travel so much on business I know the briefing for every aircraft in service off by heart.
or maybe it's:
I travel so much I want to die.