Okay, I had to revive this thread and let you all know that I've tried the soy egg nog recipe that I listed above and it was YUMMY! My whole family liked it. I usually think eggnog is much too rich, so I loved this version, which was very light but still creamy.
The nutmeg and the vanilla make the whole thing. I didn't use rum extract (as some kids who wanted some don't like the taste) and substituted vanilla extract (same amount as the rum extract), and it was good!
Make it, let it sit in the refrigerator for a while so the flavors combine, and it tastes like lighter eggnog! I'm going to have some right now.
Oh, it's also got half the calories of Silk's eggnog (which is 90 calories for 1/2 cup).