Mahershala Ali ("Swan Song"); Martha Stewart (website Martha.com); Ellen welcomes freestyle skier Colby Stevenson, who survived a near-fatal car crash, made a comeback, won the World Cup, and hopes to go to the 2022 Winter Olympics.

Andrew Garfield ("Tick, Tick... Boom!" and "The Eyes of Tammy Faye"); Sherri Shepherd ("The Sex Lives of College Girls," podcast "Two Funny Mamas"); Ellen welcomes two college students who filmed themselves rescuing a dog from an avalanche.