The popular 1996 novel Bridget Jones's Diary is loosely based on Pride and Prejudice (source).
Austen was child number seven in a family of eight, which suddenly makes the Bennet family's reproductive tendencies look modest. She also never married (source).
Austen's father was a rector (a member of the clergy), but not the basis of Mr. Collins's character. (source)
Austen began writing at a very early age, and it helped that her entire family loved to act – she could see her work actually being performed (source).
GameZebo created a casual game based on Pride and Prejudice called Matches & Matrimony. Apparently it's kind of a like a Choose Your Own Adventure book. Learn more about it here.