[2] Flacks began her acting career as a child, in a touring production of Cinderella where she played both the wicked stepmother and fairy godmother.
[4] As an adult, she has worked in Canadian and U.S. television, radio, news, and film before becoming an independent performance artist, playwright, and writer.
Flacks' early works include three one-woman stage shows that she wrote and performed herself: Myth Me (1991), By a Thread (1997),[5] and Random Acts (1997).
[6] She co-created the Chalmers Canadian Play Award-nominated Theory of Relatives with Daniel Brooks, Leah Cherniak, Richard Greenblatt, Leslie Lester, and Allan Merovit.
[10] In 2000, Flacks performed in Smudge, a play in one act written by Alex Bulmer and directed by Alisa Palmer.
[11] In 2009, Flacks wrote and performed in the play based on her book Bear With Me, directed by Kelly Thornton.