[citation needed] McGrath first started her career with three years as a member of The Second City in Toronto, Ontario, from 1983 to 1985,[1] where she was a writer and actress, and eventually a director.

[6][7] She also appeared in Eugene Levy's 1992 TV film Partners 'N Love, in which she played a lawyer whose client's divorce was found to be invalid.

[11] Producer Bob Tischler cast Cynthia Stevenson as the host, while McGrath played a local dinner theatre owner,[11] actress and head of the Chamber of Commerce.

[11] Ratings did not improve (one reviewer considered that McGrath's character was "a grating, overbearing bimbo whose I-have-no-idea-who-my-guests-are routine gets boring fast"[12]) and the show folded after one season.

[11] McGrath was also a co-writer of the Canadian Women's Television Network's Go Girl!,[13] a send-up of a cable TV talk show that debuted in 1997.

[20] The 2005 pilot show of Getting Along Famously was nominated for two Gemini Awards,[21] including Best Writing in a Comedy or Variety Program or Series.

Fellow cast members Kathy Greenwood, Robin Duke, Jayne Eastwood, Teresa Pavlinek and McGrath perform sketches about situations ordinary women face every day.

... McGrath cuts a mean rug in her tap shoes, and her monologue in the routine about being on the phone with her mum and granny hit very close to the bone.

[24] She has made numerous guest appearances on a variety of Canadian TV series and had a regular role in seasons one (2001) and two (2004) of Paradise Falls.