Have you guys ever tried Myheritage.com's facial recognition website?
I'm an identical twin and I'm constantly comparing actors faces to other people.
If you ever check imdb.com's boards just about everyone has a looks like someone else thread.
I tried a couple of photos and got:
Benjamin Mckenzie of The O.C. [???] 100%. We're triplets then.
Sophie Marceu - 67%
Peter Ustinov - 64%
Jon Bon Jovi - 63%
Clint Eastwood - 58% [I'm a brow furrower so I get it.]
I got Spike Lee and Hal Sparks for another picture. It's so my big eyebrows.
Peter Sarsgaard 66 & Terence Stamp 58%
Mary Louise Parker 58%. If I had her lips then I'd look a lot like her. Finally, one I could see the resemblance.
Here is the url - Myheritage.com
I apologise for linking a site you need to register to use but it's still fun.