The BBC gives a kind review of Eunoia:

Eunoia is the shortest word in English containing all five vowels – and it means “beautiful thinking”. It is also the title of Canadian poet Christian Bok’s book of fiction in which each chapter uses only one vowel.

Mr Bok believes his book proves that each vowel has its own personality, and demonstrates the flexibility of the English language.

I can barely read the excerpts. In fact, I might almost say I find it a little Eunoia-ing. Ok, bad pun.

Gulls churr: ululu, ululu. Ducks cluck. Bulls plus bucks run thru buckbrush; thus dun burrs clutch fur tufts. Ursus cubs plus Lupus pups hunt skunks.

Funny sounding stuff, but there is no way I would want to read a whole book of it unless it had really pretty pictures and maybe some pop-up art. I guess the advantage is rhyming comes so easily when you focus on a single vowel.