Communicate...take a few minutes when he gets home from work to ask him about his day, before you start telling him about everything that went on at home. Not knowing your husband, if he's had a bad day let him vent, or give him his space until he's ready to talk about it. This also plays into the respect that others have mentioned.
Make time for the two of you...even if it's just a half an hour or so after the kids have gone to bed to watch a favorite tv show together. Also, if you have a reliable babysitter, or family that lives locally, work it out so you can have one night to yourselves every few weeks...you're parents, and that's your number one job right now, but you're also a married couple that loves one another, and you need to be able to have that special time when it's just the two of you...it really goes a long way. Your husband may or may not be the romantic type, but that doesn't mean he doesn't want time with you alone every now and then...remember, you chose each other...the children, as important as they are, are the product of that bond, not what holds the bond together.
Let him have time to himself...which I know is hard when there are little ones, but sometimes we need to hang out with the guys, or go fishing, or whatever he likes to do...and, hopefully, he will return the favor, because you need your time as well.
Let him know he's appreciated...do something for him that lets him know you value him and what he does as a husband and father. You know what he likes. And it doesn't have to be anything big, of course...my wife will sometimes stop on her way home and bring me a bag of peanut M&Ms and a Dr. Pepper...just because, and honestly, that means just as much as when she bought me my handgun last Christmas.
So I'm sure some folks reading this may think these are all things a man should be doing for his wife...and while that's true, I believe the road goes both ways. A lot of people want to say guys are just very basic, and things that play on their emotions don't get to them...I don't believe that at all, we may not react the same way women do, but the way we're treated by others means just as much to us...we want to feel loved, respected, valued and appreciated...and really, I think that's what everyone wants.