Yea, all the videos I see of Katamari Damachi are speedruns, but I could care less about how fast you can beat the game, it is all about size for me!

So are there videos of the LARGEST katamari's for the levels?

Honestly, I haven't seen many size runs. They've always been about speed.

You can try here: http://www.wewantkatamarivideos.com/

Thanks!
They have a few of the size runs that are worth watching!