DVFilm does DV to film transfers. The company's founder Marcus van Bavel has made two films and written a book "Shooting Digital" (available at DVFilm, $35.) about how to shoot digital footage intended for film transfer. I haven't used their services, but based on the book and their website, DVFilm is a definite candidate if I ever have to transfer a production from digital to film.
I have much more to say about the whole subject of digital to film: when, why and how.
Film is probably the single best archival format available.
I suspect that 100 years from now, no one is going to be able to read any of the digital formats currently available. Film will be readable as long as the physical medium is intact.