- Amanda has appeared on the cover of three Francine Pascal books.
- She was considered for the roles of Regina and Cady in “Mean Girls” (2004). These roles eventually went to Rachel McAdams and Lindsay Lohan, respectively.
- Originally, she auditioned for the title role on “Veronica Mars” (2004) but lost the role to Kristen Bell. Instead of playing Veronica Mars, she was offered the role of Lilly Kane, Veronica’s dead best friend. She was so popular in this role that she was brought back more often than ever expected.
- She was trained in classical opera for two years and studied under a Broadway voice coach for almost five years.
- She lost the role of Babydoll in Sucker Punch (2011) because she was committed to her HBO series Big Love (2006).
- She was considered for the role of Daisy Buchanan in The Great Gatsby (2013), but Carey Mulligan was cast instead.
- Her role in the drama film Nine Lives (2005) was written specifically for her.
- One of the songs on the Dear John (2010) soundtrack was written by her.