William Thomas Hader Jr. is an American actor, comedian, writer, producer, and director. Hader gained widespread attention for his eight-year stint as a cast member on the long-running NBC sketch comedy series Saturday Night Live from 2005 to 2013, for which he received four Primetime Emmy Award nominations and a Peabody Award. He became known for his impressions and especially for his work on the Weekend Update segments, where he played Stefon Meyers, a flamboyant New York City nightclub tour guide.

Documentary Now! is an American mockumentary television series, created by Fred Armisen, Bill Hader, Seth Meyers, and Rhys Thomas, that premiered on August 20, 2015, on IFC. Armisen and Hader star in many episodes, and Thomas and Alex Buono co-direct most episodes. Hosted by Helen Mirren, the series spoofs celebrated documentary films by parodying the style of each documentary with a similar, but fictitious, subject. The third season premiered on February 20, 2019. On April 8, 2019, the series was renewed for a fourth season, which premiered on October 19, 2022 and was also released on AMC+.