This time a little different one, because it's more suitable for the adult audience. It's "The House of Small Cubes" by Kunio Katou, aired in 2008.
It's difficult to tell anything about the plot, because... this movie hardly has a plot. It's about a daily life of an old man (we don't even know his name). One day he losts his favourite pipe in deep water. Instead of buying a new one, he decides to dive to take it. This "journey" brings back memories about his past and relatives.
This short animation is in general about the humanity: loneliness, evanescence, love, family, senescence, memories... It shows us that a movie doesn't need to have a complex plot to be touching.
For me, "The House of Small Cubes" is just beautiful. I can't find any other epithetes to describe the warmth you feel in your heart as you watch it... Thankfully, this opinion is not only mine since it won several prizes in different festivals, including the Oscar award.
Well, it lasts only 12 min and it is definitely worth seeing. I strongly recommend it to you.
The full movie you can see here: