I agree with a PP about telling your children how much you love them and that you wish you could spend more time together (especially if both parents work outside the home). I have flexed my schedule in addition to cutting my in-office work hours so that I can be home 2 afternoons a week and be able to pick up my oldest son from school 3 days a week. It may mean doing office work from home at 9:00 at night (when the kids are in bed) but for me, that is a good trade off while they are young. My mom worked (teacher) but it was the after-school hours that I remember her being home with me that I cherished.
We do eat together as a family almost every single night. I plan our meals around activities so that we can find the time to do this. On the weekend, we eat breakfast together and often both lunches. We reserve one night on the weekend as family movie or game night and stay home. The other night is usually a family outing or a date night for DH and me (which all parents need IMHO, even if it's just alone time after the kids are in bed).
DH and I are trying to give the kids experiences rather than "things." So we buy a zoo and children's museum pass and a swimming pass. This way, we have pre-paid family activities that we can enjoy together and it gives us physical activity as well.
My husband, who is a teacher, takes my oldest with him when he needs to work in his classroom on the weekends. They get some time together and I get some time with my middle son (baby girl is usually napping). Or it's the reverse and he takes middle son with him and oldest and I get some time together.
DH also left the busy administrative job he had and went back to teaching. It was a 35% cut in pay for us but the time we get with him is priceless. We make it work. And my kids benefit so much from having both mom and dad at home at night and on the weekends.