Help! Husband is threatening to "sort my boss out" and i'm not sure what to do!?

To cut a long story short, my boss is a pain in the backside. He's not a bad boss as such, but has an extremely overpowering personality and i leave work each night feeling mentally drained and exhausted. He's in his late 50s but i often wonder if he's on speed or something as he talks at me non-stop, never listens to a word i say, undermines me all the time, gives me all the crap jobs to do that he doesn't want to do, gets right into my face and has actually physically knocked me out of the way twice. My husband only knows a little of all this, as he'd be so angry. One of my colleagues told my husband about something that happened last week (he snapped his fingers at me infront of a customer and waggled his finger at me to come over to him) and my husband has now said that he is going to come into my work and thump him for upsetting me. Problem is that i enjoy my job (when my boss isn't there!) and my boss just has this overbearing personality and that's just the way he is. I feel that i'm being totally used sometimes and it's making me upset, but as i say, the guy isn't a bad person, he's just so loud and in my face all the time. Any suggestions on what i should do? I really don't think talking to him will make any difference. Nobody at work can stand him either because of the way he behaves. Thanks for any advice x