Blimey, are you sure you're not with my DP? Currently I can't:
Eat tomato soup
Eat peanut butter
Drink hot milk or make porridge
Drink hot chocolate
Have the small table lamp on in the living room
...without him shuddering, making sounds of disgust or annoyance and then usually leaving the room. Peanut butter and porridge the only think he won't leave the room for, but he'll snatch up my bowl/cup whatever afterwards and rinse then out, as if leaving a tomato soup-y bowl lying about in the kitchen sink is the height of unreasonableness. If I leave the door open and 'waste' the heat from the fire (the rest of the house is unheated and freezing) then I get tsked at, and he slams the door pointedly. Leaving lights on, filling the kettle more than is needed, putting on the washing machine in the day (it's cheaper at night)... oh, I could go on. All provoke a similar pointed negative response, designed to make me feel like a foolish little girl and not an equal in this partnership. As far as I know this is classic passive aggressive behaviour, with some instances of twattishness and miserly behaviour thrown in too of course. I have bought 'Living with the passive aggressive man' but haven't had time to read it yet due to caring for our four month old DS. But I found the Amazon UK and US reviews helpful in summing up the book, if you are interested.
I'm also in the process of slowly reading Why Does He Do That? Inside the Minds of Angry and Controlling Men by Lundy Bancroft. It's AMAZING, and already has helped me so much to stand up to the above behaviour. For example if he does a big breathy sigh when I switch on the ('blinding, unbearably bright', according to him) living room lamp, I ignore it. If he shields his eyes or gets up and walks out, I don't switch it off like I used to. If he says melodramatically 'well, I'll go upstairs then if you're going to be drinking that/using that' I say 'okay then, if you feel the need! See ya...' and don't stop what I'm doing.
What is humiliating and embarassing about passive agressive behaviour, is that its such little things. I feel daft just typing what he does, but although its so insiduous, it can drive you crazy. In fact, that's probably WHY it drives you crazy.
I've lost count of the time I've heard 'Oh, I was only joking' 'Don't be so over sensitive' after a snide remark designed to make me look foolish in some way. His mum is the same as him too, which is depressing. Makes me think its pretty ingrained and these people can't change, although some do. For a passive aggressive to make changes though, they have to really want to, and admit their behaviour is problematic and unacceptable. I'm making small inroads in this area but its so tiring always calling them on it that it makes me not want to bother and just tell him to fuck off.
Lastly, I found the following websites on passive aggression VERY helpful, especially the first one:
divorcesupport.about.com/od/abusiverelationships/a/Pass_Agg.htm
www.coping.org/anger/passive.htm
I have utmost sympathy with you, I know what this is like. The only difference is I have been with my DP for only one and a half years, not eight. And I don't know how you put up with it for so long, but I salute you. I suggest you read the Lundy Bancroft book as I think it will really help you.
Good luck x