Schell Games patent!). But watching Inside Out, it's a different enough concept that I have no worries about overlap.
Really, I liked everything about this -- the concept, the writing, the voice acting (best acting Amy Poehler's ever done, I think!), even the weird rendering shader that makes the emotions look kind of like muppets. Unlike Tomorrowland, it had a solid grasp on the hero's journey, and also made the most of Pixar's famous rule-based storytelling... (I *love* rule-based storytelling... so many delicious rules...) I'm so glad they made this! You go, Pixar!