Let’s not forget how Ben Stiller brought together Jack Black, Tom Cruise, Bill Hader, Matthew McConaughey, and Robert Downey Jr. to make one of the greatest comedies of the century: Tropic Thunder (2008).
The chest-beating scene in The Wolf of Wall Street (2013) was completely improvised. It was Matthew McConaughey’s own warm-up ritual, spotted by DiCaprio, who urged Scorsese to film it. They shot it on the spot. Instantly iconic.