"Munching" sounds like an appropriate name for it... that used to be more of an issue for me years back than it is now; these days, I'm mostly engaged in "munching" on permutations and projections of possible futures for humanity, and what I might be able to do in the Present Moment to make those more likely to come true.

One of my former therapists described it as "borderline OCD," but not in a debilitating way.