As you may know Terrence Howard get kicked out of the cast of Iron Man 2, Don Cheadle taking over his role as Jim Rhodes aka War Machine. The guy has been fired because he was probably too greedy when bargaining his new contract with Marvel. When asked about his misfortune during an interview on NPR he expressed his sorrow:
No need of divas in Hollywood: production companies have guts and will not hesitate to get rid of those who ask too much! So dear actors think twice before tempting your fate out of greed!