Natalie Portman is one of the founders of this site with tons of great EPK videos of behind the scenes kind of things.
Art of the Title Sequence has great info and in depth interviews and videos on the title sequences and effects for the coolest opening or closing sequences of film from the earliest days to the latest craze.
For sound design, sound mixing, film scores, and all things audio – these videos are amazing and insightful for one of the most under-appreciated aspects of filmmaking – sound.
John August, the screenwriter behind BIG FISH, GO, and others, shares opinions and ideas.
An old classic that still has and adds screenplays, even separating the “transcripts” from the “screenplays”, where one is a transcription of what was in the final edit, the other is the WRITER’s intent. Great reads, especially if you read unproduced drafts or early drafts of film classics. I still recommend reading THE GREN MILE or SHAWSHANK REDEMPTION for the art of effeciency in screenwriting and description.