Katherine Marie Heigl was born on 24th November, 1978 in Washington D.C and started her acting career in 1992.
Steven John Carell on 16th August, 1962 in Concord, Massachusetts (US), he dropped the first name when he took up acting and is known to the world as simply Steve Carrel.
Seth Rogen was born on 15th April, 1982 in Vancouver, British Columbia (Canada).