She is also known for her work with J. J. Abrams, appearing in Mission: Impossible III and episodes of Alias and Lost.
She has also appeared in the 1997 film Clockwatchers as "Dianne", in Seabiscuit (2003) as "Marcela's friend", in Steven Spielberg's The Terminal (2004).
She was set to appear in J. J. Abrams' television series The Catch as "Stella", before its cancellation by ABC.
She was a regular cast member and writer on the comedy Head Case as Lola on the Starz network.
Arthur has also lent her voice to several video games, including Armed & Dangerous, playing three characters - "Leper Boy", "Leper Woman" and "Lady of the Pond", as well as voicing characters in X-Men Legends (as Moira & Female Prisoner #3) and EverQuest II (as Smith Cayless Chambers, Merchant Tanaira and Vida Sweeps).