This week's answers

1. Dorothy in The Wizard of Oz.

2. Die Hard. The new film is the fourth in its series. The rest are all the third.

3. Casablanca

4. Moulin Rouge

5. "Yeah. Well, I'll make him an offer he can't refuse." Dialogue from The Godfather.

6. Springfield, home of The Simpsons.

7. The Great Escape.

8. The actors in the television series Friends.

9. They were named for - or took pseudonyms from - colours.

10. They all take place in real time.