As user-pays creeps into airline travel, so too does user-didn't-pay, and this can make for a slightly awkward journey from both sides of the plane ticket.
A friend was travelling on an Air New Zealand "Works" ticket across the Tasman recently and was happily watching a film when she noticed that her seatmate was enjoying it too - not from their own seat but from half of hers.
Yep, without even having sound, the woman next to her was actually leaning over her shoulder - seriously invading her personal space - to catch the action. After a few seat wriggles, the message got across that this was not okay.
I've been the person drooling at the smell of the next door neighbour's stir-fried beef, so I make sure to pass on my icecream or cheese and crackers if I happen to be sitting next to a ravenous passenger and can see they're in need of a feed.