For some reason, the cats have to be close to me if I'm working on a computer - be it the pc or the laptop. Actually, that goes if I'm just sitting down too. If one comes to say hello, then green eyed monster jealousy means that the others have come to say hello too... which usually ends with a bit of a hiss and a roar between them as they don't really like being very close to each other.
Ginger kitteh, Tinsel; and our Chocolate & Cinnamon Ocicat, Cheetah
But sometimes, it seems they can cope with being this close together, if it means they get to stay near me in typical cat comfort!