The actor decided to visit the woman - who works as a switchboard operator for US TV program "The Tonight Show" - after he knew that she wasn't permitted to leave her post to meet him when he appeared on the show.Her friends told Hugh it was her birthday, so he crept up behind her whispered "Happy Birthday" and then kissed her on the neck.
The woman span round, but upon coming face-to-face with her idol she turned bright red and fainted in his arms.Hugh screamed: "Oh my GOD! Somebody help me! I think she has fainted!"
The girl was eventually brought round with the aid of smelling salts and cold compresses. Once she had composed herself she happily posed for a photograph with Hugh.