The source provides an extensive overview of the life and work of Megan Mullally, an American actress best known for her role as Karen Walker on the sitcom Will & Grace. The text details her early life and education, including her studies at Northwestern University and her background in ballet, before transitioning into a comprehensive career summary. This career summary is segmented by medium, covering her work in television, theatre, music (including her bands Supreme Music Program and Nancy and Beth), and film. Furthermore, the source includes information about her published works (co-authored with husband Nick Offerman), her personal life and marriages, and a long list of her