One of the most interesting people I have met so far is Félix Morales Pettorino, the Father of my host mother. He has a long and esteemed career in linguistics, focusing mostly on Chilean Spanish and literature. One of his most notable feats is the creation of a dictionary with real-life examples of word usage for Chile (more or less similar to the Oxford English Dictionary or Corpus of Contemporary American English) - Diccionario Ejemplificado de Chilenismos (1983-2010) which is, in its completion, more than 12,000 pages of Chilean Spanish.
The man is in his 90s and still writes frequently (I believe a book is currently in printing, expected out at the end of the year). He has all kinds of works. Linguistically, he has tons of publications on Chilean phonetics, morphology, syntax, to name a few. Outside of linguistics, he has published poetry and a few ficción technica (kinda like science fiction but not quite equal) themed novels.
What an amazing opportunity to meet this man! He gave me a 5 or 6 of his books, and I can't wait to get into them!
Below is a link to his blog (sorry, it's only in Spanish):