Oh, I love Oulipo! I like to compare it to visual art, using language as your material, like a painter uses paint. It inspired two big anthologies in Dutch, and some avant-garde magazines, but not really a movement.

If anyone wants to read an English equivalent, try the poem Eunoia by Canadian poet Christian Bök (that's him reading the chapter I, using the letter I as the only vowel). It's impressive. Bök managed to create a meaningful and passionate text within the constraint of using only one vowel per chapter.