The very first Thomas Pynchon book to be made into a film?  

"Inherent Vice"...!

"It's the first book by Pynchon to be made into a film, and as with all things Pynchon, people have been fairly closed-mouthed about the project. "  With a big name director and an Oscar winning actor attached (and no, I'm not going to tell you) you'll have to read this piece from the LA Times.  Get the book version at the Merrick Library.