Zach Galifianakis is an American actor, comedian, and writer, best known for his unique style of humor and distinctive appearance. He gained widespread fame for his role as Alan Garner in the Hangover film series, which showcased his comedic talent and earned him critical acclaim. Galifianakis has also appeared in various television shows and films, often bringing his quirky personality to the screen. In addition to acting, Galifianakis is known for his web series, Between Two Ferns, where he interviews celebrities in a humorous and unconventional manner. His work has earned him several awards and nominations, solidifying his place in the entertainment industry as a talented comedian and performer.