From Zappa Wiki Jawaka
Cinematheque 16 was a movie house located at 8818 Sunset Boulevard, Los Angeles, CA. After the Cinematheque closed the building was occupied by the Book Soup bookstore.
#1 The Cinematheque 16 still happens on a psychedelic level with rare and interesting films from the Great Underground. Located at 8815-1/2 Sunset Bl. (657-6815).
The name was later used by Jeff Allen for his movie review show on WUSF TV in Florida.