I'm tempted to follow Tony's recommendation on the high quality of the SONY MDR-EX70(Now 71SL), but the quality isn't the issue:

Mrs.Boxer complains vehemantly that she can't sleep, because she can hear the sound of the radio from my cheapo in ear headphones. I've always got the cheapest, because I only listen to spoken word at night, and sooner or later I fall asleep, roll over and stretch the cord 'till it doesn't make contact.

Can anybody suggest a headphone that doesn't annoy the person next to you, at a reasonable price?