Chocolate Meets Peanut Butter

I've been using this metaphor for years. I guess that makes me a corporate shill, since the wording comes straight from an advertising campaign:

two great tastes that taste together, metaphor. Any case of synergy, where the whole is greater than the sum of the parts.

A couple of years ago, Nick exposed me to wording more like this, which is what I mostly use now:

chocolate meets peanut butter, metaphor. Any case of two great tastes that taste together.