Man, how lame- I didn't even realize this thread was about me... (Youuuu're so lame... you probably think this thread is about you...)
So, here's what I'm planning- I'll be posting a recipe thread later.
For the bottom layer, a thick, high FG chocolate porter (sweet, almost no hoppiness if any; like Framboise but with chocolate), not very carb'd.
For the top layer: an effervescent, relatively light-bodied semi-sweet vanilla, higher alcohol, high carbonation, hopefully high attenuation. The sweetness here will come from just a little lactose, mostly it will be suggested by the nose and flavor of the vanilla.
That should work, I hope...
Thoughts?
(And I will cross-post this into the recipe thread when I start it, as long as the mods don't mind)