Jared Leto sent condoms, anal beads, and a dead rat to his fellow cast members on Suicide Squad
You thought we were going to leave Jared Leto off this list? The 30 Seconds to Mars frontman has been mocked and praised for his unhealthy commitment to his craft: He gained 67 pounds to play John Lennon's killer Mark David Chapman in the poorly received biopic Chapter 27 and lost over 40 pounds to play an HIV-positive transgender woman in the Dallas Buyers Club, which won him an Oscar.
To follow up that role, he played the Joker in David Ayer's superhero team-up Suicide Squad, and to get inside the "twisted" mind of the comic book villain the actor sent all his co-stars condoms and anal beads. "I did a lot of things to create a dynamic, an element of surprise, spontaneity, to break down any walls that may be there," Leto told E!. "The Joker is someone who doesn't respect personal space or boundaries." He also sent Margot Robbie, who played the Joker's partner-in-crime Harley Quinn, a love letter and dead rat.
So, if you take one important acting lesson away from this list, let it be this: If Jared Leto sends you mail, be careful opening it.