Do I look like someone famous?

I was wondering, with the advances in the technology, can I find out which famous person do I look like? (or which famous person looks like me?)
People keep telling me that I look like Kevin Costner but I am not sure if it is really true or if they have hidden agenda!
Also, I don't mind getting tips (from an automatic software) on how I can look like a celebrity?
Any help on this ???
As it is said in "Devil's Advocate", "Vanity is my favorite sin"!