Jim Carrey performs a bit from his 1991 stand-up special Unnatural Act, wearing a vibrant color-blocked polo shirt on stage in front of a live audience. He sets up a series of celebrity impressions, announcing Jack Nicholson at 00:01, Clint Eastwood at 00:28, and James Dean at 02:23. For each impression, he turns away or covers his face before dramatically spinning around to reveal the exact same wild, squinting, tight-lipped grimace. The core joke peaks around 00:46 when he breaks the third wall to laughingly point out that every single one of his impressions uses the exact same ridiculous face.
It is a great clip demonstrating Carrey's signature physical comedy and hyper-kinetic energy during his early stand-up career. Rather than trying to deliver accurate voice work, he subverts traditional impressionist routines by leaning fully into the absurdity of using one extreme expression for completely different icons.