Yesterday I cried at a Pixar short about umbrellas. I still can't say why, other than I was amazed by the CGI. (Now if it had been the introduction to Up, that would have been understandable)
There are a lot of ideas running through our subconscious, and our reactions can trigger from the slightest of things.

I hate how a can't control my tears. I can hold my composure completely, yet tears still manage to sneak through. So embarrassing. :/