Pixar has made some really good films.
1) Toy Story 2 (Used to watch this a million as a kid so it's a really nostalgic film + This scene gets me every time -https://www.youtube.com/watch?v=ElhbTsKsros)
2) The Incredibles (One of the first movies I remember seeing at a cinema, never get tired of watching it)
2) Toy Story 3 (That last scene)
4) Toy Story
5) Monsters INC/Wall-E