Stephen welcomes TV host John Oliver with stand-up comedy from Joe Dombrowski.

Stephen welcomes actress Jamie Lee Curtis with "The Colbert Questionert" and former basketball player Carmelo Anthony.

Stephen welcomes TV host Drew Barrymore and CEO of NPR Katherine Maher.

Stephen welcomes actor Cillian Murphy and a musical performance by Lady Gaga.

Stephen welcomes supreme Court Justice Sonia Sotomayor and actor Eugene Levy.

Stephen welcomes actress Jennifer Aniston, actor Cooper Hoffman, and "Rescue Dog Rescue" with Jennifer Aniston.

Stephen welcomes singer Usher and Gary Oldman takes "The Colbert Questionert".

Stephen welcomes singer-songwriter Brandi Carlile and chef Samin Nosrat.

Stephen welcomes director Ron Howard and Gary Oldman takes "The Colbert Questionert".

Stephen welcomes journalist Jake Tapper plus an interview with and musical performance by St. Vincent.

Stephen welcomes actress Scarlett Johansson and Senator Mark Kelly.