Allison Janney is known for her role as C.J. Cregg on the NBC TV political show "The West Wing (1999-2006)".

She played Bonnie Plunkett on the CBS TV sitcom "Mom (2013-)".

Some other TV shows she appeared on are "Morton & Hayes", "Law & Order", "The Wright Verdicts", "New York Undercover", "Aliens in the Family", "Cosby", "LateLine", "Frasier", "Weeds", "Two and a Half Men", "The Battery's Down", "In Plain Sight", "Lost", "Mr. Sunshine", "The Big C", "Veep", "Web Therapy", "The Adventures of Mr. Clown", "Break a Hip", "Masters of Sex" and "Nobodies".

She played Barbara Fitts in the movie "American Beauty (1999)", Lyla Branch in "Nurse Betty (2000)", Sally Lester in "The Hours (2002)", Prudy Pingleton in "Hairspray (2007)", Brenda "Bren" MacGuff in "Juno (2007)", Charlotte Phelan in "The Help (2011)", Cathy Ostroff in "The Oranges (2011)" and Elaine Crocker in "Spy (2015)".

Some other movies she appeared in are "Who Shot Patakango? (1989)", "Blind Spot (1993)", "Dead Funny (1994)", "The Cowboy Way (1994)", "Wolf (1994)", "Miracle on 34th Street (1994)", "Walking and Talking (1996)", "Big Night (1996)", "Faithful (1996)", "The Associate (1996)", "Rescuing Desire (1996)", "...First Do No Harm (1997)", "Private Parts (1997)", "The Ice Storm (1997)", "Path to Paradise: The Untold Story of the World Trade Center Bombing. (1997)", "Julian Po (1997)", "Primary Colors (1998)", "The Object of My Affection (1998)", "The Impostors (1998)", "Six Days Seven Nights (1998)", "Celebrity (1998)", "David and Lisa (1998)", "10 Things I Hate About You (1999)", "Drop Dead Gorgeous (1999)", "A Girl Thing (2001)", "How to Deal (2003)", "Winter Solstice (2004)", "Strangers with Candy (2005)", "The Chumscrubber (2005)", "Piccadilly Jim (2005)", "Our Very Own (2005)", "Pretty Ugly People (2008)", "Away We Go (2009)", "Life During Wartime (2009)", "Margaret (2011)", "Friday Night Dinner (2012)", "Liberal Arts (2012)", "A Thousand Words (2012)", "Struck by Lightning (2012)", "Touchy Feely (2013)", "The Way Way Back (2013)", "Trust Me (2013)", "Bad Words (2013)", "Brightest Star (2013)", "Days and Nights (2014)", "The Rewrite (2014)", "Tammy (2014)", "Get on Up (2014)", "The DUFF (2014)", "The Night Is Young (2015)", "Tallulah (2016)", "The Girl on the Train (2016)", "Miss Peregrine's Home for Peculiar Children (2016)", "I, Tonya (2017)" and "Sun Dogs (2017)".

Happy Birthday!