Mel Gibson, $30 Million
Mel Gibson became the highest-paid actor for a single project in 1998. He starred in Lethal Weapon 4 and took home a $30 million paycheck. The Lethal Weapon series was also hugely popular, making Gibson a high-priority actor.
Jack Nicholson, $50 Million
Jack Nicholson starred as the Joker in the 1989 Batman movie, and he laid an exceptionally creepy foundation for his predecessors Heath Ledger and Jared Leto. Nicholson took a percentage of the film's profits, earning him a $40 million pay increase.