Hi Momma! That sounds so exciting! And congratulations!
First, get the man a t-shirt that says Dad on it. Who cares how it says it, make sure he know that he is the new dad. Have it delivered with COngrats balloons, a baby rattle, and all that fun stuff. Really make a to do out of it. If you want it to be more....mission impossible....then send lunch with him, and pack about 10 jars of baby food. Inside, leave a little card that says something like "dad, please practice opening these jars. I am going to be hungry soon!"
Anything crazy.
You can also get one of those t-shirts that points to the belly with something fun about baby on it. My brother in law has one that say "dad" in binary code. He's a programmer, so it was perfect for him.
For the family, my sister gave my parents a random gift and the card said To Grandma and Grandpa, from baby ___________________, due September 2009. It took them a second and then there was a lot of shrieking.
I found out because my sister very carefully left the ultra sound with arrow pointing to baby on the center of the table. I saw it and did the "OMG, you're having a baby! AAAAAAAAAAAAHHHHHHHHHHHHHHHH....all the girly screams and screeches.
Basically, tell dad first. Get him really excited. And then let him help you plan the family notification.
Congrats momma!
-E. M