Chico Xavier

Has anyone here heard of the Brazilian Psychography medium Chico Xavier?

Just found out about him today - his work seems impressive and he seems like an impressive guy, he sold millions of books and all the proceeds went to charity.
Yes, heard of him but that's about all, a friend told me about him a year ago or so. There are a few videos on Youtube about him, but not a lot in EN or with EN subtitles I'm afraid....
He was a very interesting medium and worth researching (IMHO). You should be able to find free English PDFs of a number of his books. The movie Nosso Lar (our home) was based on one of his books and is pretty well done (has subtitles).