What They've Got In Common: Toys. Also, stories. Also, EVERYTHING SINCE ONE IS A LICENSED MERCHANDISING COMPANION OF THE OTHER.
Fun Fact: Pixar has made enough money over the last 15 years to actually buy everyone in the world—against our will, mind you—place us in suspended animation, then revive us all and make us believe that we've all become CGI characters in a PIxar production. And then we'll all laugh and laugh and laugh! And then perhaps our brains will implode from existential panic. And then Steve Jobs will compile all of our souls into a giant hoagie sandwich and eat it while watching Toy Story 3: The Video Game: The Movie.