Despite what Jeff Bridges and Matthew McConaughey have been working for decades to disprove, being an actor is hard. For even the smallest roles, there's typically an intense amount of work going on behind-the-scenes to make that performance a reality. The best actors work tirelessly at their craft, often going to insane lengths to get into character.
Then again, some actors are so good at what they do that they could show up on set drunk, high, and belligerently pants-less, but when the cameras start rolling, they're able to turn it on and deliver the goods.
Because when you're a truly brilliant actor, you don't necessarily have to bring your A-game to turn out a brilliant performance. And it's not necessarily just actors, either. Some of the greatest musicians of all time, including Jimi Hendrix and Marvin Gaye, made some of the greatest albums of all time for no other reason than they were contractually obligated to do so. That's the difference between a hard-working, competent entertainer and a damn genius.
The following actors were somehow able to take care of business and put some amazing performances on film while being as lackadaisical about their roles as someone can be while still having a pulse.