Lucia Rijker, the actress who plays dastardly Billie "The Blue Bear" Osterman, was also one of Hilary Swank's boxing coaches for the film. Rijker is a world champion boxer and kick-boxer. (Source)

Sandra Bullock and Ashley Judd were also in the running to play Maggie. Bullock ultimately dropped out due to her commitment to another Warner Brothers movie, Miss Congeniality 2: Armed and Fabulous. We're sure she doesn't regret that decision at all. (Source)

The little girl with the dog at the gas station is Clint Eastwood's youngest daughter, Morgan Eastwood. (Source)

"Mo cuishle"—which is usually spelled "Mo chuisle"—literally means "my pulse." Remember that next time you're at the gym. (Source)