Best anime ever. It may seem weird at first, but everything is a metaphor for something else down to the title which is really sexual innuendo. Almost one big random inside joke that all the Japanese are in on. I suggest you watch for both humor and depth

What I mean by the philosophy of katamari damacy

It's funny how life begins really. Just one little cell, then we grow inside our mothers in the image of our parents. And then we are released into the world picking up everything around us. And the soul grows until it is magnanimous. Brilliantly huge, complex, nonsensical. And everywhere we roll the Katamari it leaves it's mark on the world. Be it the gap in a row of chess pieces or a missing baseball stadium. And then, after a short amount of time, almost too soon, the katamari is catapulted into the heavens for all to see. And some people make katamaris so big that they can't missed. They glow brightly forming constellations with our family and friends, our contempories.

Society is like that too. It all works in reverse. The culture rolls and rolls upon its people. Some by chance, somenot. And we toss in our lives and creations to be a part of the sky, to be a part of our culture's katamari. And before you know it, it is time for a new culture and the katamari taken to the cosmos. It it will forever shine on the earth below it and the katamari that roll upon it. Just an eternal ball of junk rolling upon itself, forming an every growing infinitiy.