The gist--which I'm sure you've already picked up on from the images above--is that he takes objects and scenes from everyday life and rearranges them into organized, orderly stacks, rows, or groups. It's satisfying, in a way, to look at his work, but also very humorous, clever, and crazy--especially when you see the large-scale images like the one above ;)
I'm dying to see the entire collection, but you can take a look at a small selection from the book below...
I think I may need to pick up his book, The Art of Clean Up: Life Made Neat and Tidy, so that I can see all of the images he came up with.
You can read more about Ursus Wehrli on his website, here, and can hear his TED talk (which I'm excted to listen to and will do tomorrow!), here.
I hope you have a neat and tidy day! Makes you want to clean something, doesn't it!?