Bonnie Somerville is an American actress and singer. She has had roles in a number of movies and television series, most notably as Mona in Friends; she has also appeared in NYPD Blue, Grosse Pointe, The O.C., Cashmere Mafia, Without a Paddle, and Golden Boy. She starred as Dr. Christa Lorenson in season one of the CBS medical drama Code Black.

Friends is an American television sitcom created by David Crane and Marta Kauffman, which aired on NBC from September 22, 1994, to May 6, 2004, lasting ten seasons. With an ensemble cast starring Jennifer Aniston, Courteney Cox, Lisa Kudrow, Matt LeBlanc, Matthew Perry and David Schwimmer, the show revolves around six friends in their 20s and early 30s who live in Manhattan, New York City. The original executive producers were Kevin S. Bright, Kauffman, and Crane.