The word "doppelgänger" has come to refer (as in German) to any double or look-alike of a person. The word is also used to describe the sensation of having glimpsed at oneself in peripheral vision, in a position where there is no chance that it could have been a reflection. They are generally regarded as harbingers of bad luck. In some traditions, a doppelgänger seen by a person's friends or relatives portends illness or danger, while seeing one's own doppelgänger is an omen of death. In Norse mythology, a vardøger is a ghostly double who precedes a living person and is seen performing their actions in advance.
Who’s your doppelganger? According to friends – notice the S there, my doppelganger is this lady:
But then, when I browse thru my pictures, I don’t see any resemblance. (^_^)
P/S: Found a website dedicated to all Angelina Jolie doppleganger : http://www.ajlookalikes.com