Wyeast 1084 + Nutrient + starter + Stout == BOOM!

I haven't seen this kind of activity in a while.  It's definitely exhilarating!  I honestly don't know if 1) it's the stout recipe I used (a modification of the deception cream stout from HomebrewTalk forums), or 2) using yeast nutrient (haven't in a long time, tried again this round), or 3) enough aeration (still shaking the fermenter, but I did it for longer this time), or 4) the Wyeast 1084 Irish Ale yeast I'm using (my first time using this yeast). 

Anyway, it's nice to know it's doing its job!