Oh, as johngalt said don't neglect your spouse. My wife and I had our first real night out in months last week. It's amazing when you get to go out and be husband and wife instead of mom and dad.
Grandma gets to watch the boy, and spend some quality time with him, while Mommy and Daddy get some one-on-one time.
I love my wife very much, she's great, and a great mother. I try to show her I appreciate her as often as I can.