Brothers & Sisters

While the producers were looking for an actor to play the role of Jason McCallister (Robert McCallister's brother and Kevin Walker's love interest), Rob Lowe, who plays Robert McCallister, recommended John Barrowman, who had co-starred with Lowe in "A Few Good Men" on the London stage. The producers offered the role to Barrowman, and he was interested in taking it, but was ultimately unable to work the shooting schedule around the schedule for his own show, Torchwood (2006).

In the final season, there is a story line about Sarah's biological father and blood types. Both William Walker and Nick Brody have type B blood, and it was revealed in a previous season that Nora has type O blood. Sarah's blood type is said to be AB, but this is impossible. For a child to have type AB blood, there must be some combination of A and B. Either one parent is A and the other is B, or one parent is AB and the other has any other type. If Nora has O and both fathers have B, Sarah must have either type O or B blood.

Featured in The 59th Annual Primetime Emmy Awards (2007)