Thanks to Carly for this link
What Famous Person Do You Look Like?
My top 5 matches were:
Katie Holmes, Rene Zellweger, Madonna, Julliane Moore, Liv Tyler
There were about 3 or 4 more others that were there too.. but I can't think of who they were at the moment. You do have to register to get your results, but hey, it's free.
Have fun. It's a great way to flatter yourself, let me tell you.
And Happy New Years!