I like the older Blockbuster one where this lady is asking herself what kind of movie she is in the mood for, and it shows examples of them. It eventually gets to the point where you see these African hunters going after a boar for a documentary. Then the youngest hunter gets pissed at the older hunter, who is his father, and that is for a coming of age film. Then, for the best part, as an example of a family film, the boar asks the father if he wants him to go talk to his son (sounds exactly like Babe), and the dad screams. I love it
What are YOUR favorites?