For #7, I know Ellen Burstyn and Tatum O'Neal were both in movies later made into TV shows: Alice Doesn't Live Here Anymore and Paper Moon. Don't think that's all that unique.
I also don't think I've ever seen Paper Moon. However, watching a show the other day that included a short clip from Paper Moon added some depth to a joke in a different movie -- Better Off Dead.
- Tatum O'Neal: "I want my two hundred dollars." youtube
- newspaper kid: "I want my two dollars." youtube
Kinda like seeing Treasure of Sierra Madre after Blazing Saddles and realizing "Badges? We don't need no stinking badges!" was a reference joke. Of course there's a wiki page for stinking badges...but before you click that link, here's my trivia question for the week:
Name two movies in which Orlando Jones played a door to door salesman.