Russell Hicks is a US comic now based in the UK who has a very unique style. His sets mainly involve riffing in a room with what and who he sees in front of him. Here's a short clip if you're unfamiliar with his work https://vimeo.com/944374484?share=copy&fl=cl&fe=ci

Sam and Russ discuss how he preps for shows with little pre-written material, how being empathetic to your audience helps your cut through, getting comfortable with discomfort and the craziest gigs he's ever done (and they do get pretty crazy.)

Enjoy.