Be warned: Up is a thoroughly depressing film. I came out of the cinema feeling about ready to slit my throat :( Of course, what made it worse is that I'd been expecting something upbeat, more along the lines of Shrek or Monsters, Inc. I had no idea of the plot, so when it turned to heartbreak about ten minutes in I was... WTF?? I don't know whether it's supposed to be uplifting in the end, but it never got there for me.