Scarlett Johansson's turn as Black Widow in "The Avengers" was so well-received that producers are willing to throw some serious cash her way for the sequel. According to The New York Post, she has been offered a record-breaking $20 million to reprise her role in the second film.
For some perspective, Forbes ranked Kristen Stewart as last year's highest-paid actress, but she can "only" bank about $12.5 million per film (Stewart made $34.5 million over 12 months). Cameron Diaz was second on this year's Forbes list at $34 million, but acted in three movies for that sum.
Marvel and Disney have plenty of money to toss around, as "The Avengers" is now the third-biggest global box office draw in history, having brought in over $1.355 billion in worldwide sales (that's more than "Harry Potter and the Deathly Hallows Part 2").