Katherine Marie Heigl (born November 24, 1978) is a Golden Globe-nominated American actress. Heigl is best known for her roles on the TV series Roswell and Grey’s Anatomy. Katherine Heigl first made her mark as Isabel on the spooky TV series "Roswell" and later on "Gray’s Anatomy." Her film credits include "That Night", "King Of The Hill", "My Father, The Hero", "Under Siege 2", "Bugbuster" and "Bride Of Chucky."