When they are bringing the injured woman into the hospital they pass a Doctor with a white beard..the actor was in Scrubs and played "colonel doctor" as he has a passing resemblance to Col Sanders.
Jose Zuniga, Mary Mara, Hayley McFarland, Max Arciniega, Rebecca Field, David Kaufman, Molly Schaffer have all appeared in the series ER.
The number on Cal's hotel room door is 314.
Madeline Carroll and Mary Mouser appeared in Season 1 and 2 respectively. In the TV Series - Scandal - both have played the same character of Karen Grant, the President's daughter.