Bilingual novels

Simon Ager wrote in his blog on 24 May 2007 that "In regions where two or more languages are a part of everyday life, you'd think that some writers might use a mixture of those languages in their stories. However, apart from a few Welsh and Irish novels which include bits of English dialogue, I haven’t come across any bilingual novels. Have you?" He got several responses, mentioning works by Jose Maria Arguedas, Carlos Fuentes, Avi Wortis, Giannina Braschi, Rolando Hinojosa, Anne Frank, and T. Coraghessan Boyle, as well as some films. Had I read the entry then, I would have posted hundreds of names of authors from the Philippines (all Filipinos are at least bilingual; most are multilingual or polyglots).