My cool celebrity look-alike collage from MyHeritage.com. Get one for yourself.
Thanks to Patsy's blog, I was introduced to this Celebrity Lookalikes website. It took three photos before I found one that could be recognised - and the celebrities who most closely matched were (a) male, and (b), Japanese! I managed to find some women so I wouldn't look too testosterone fuelled.
Really neat site though - you can upload pictures of your relatives or ancestors and it will find matches for the ancestors you can't place. Probably early days, and they might not have a very big database yet, but a technology to watch.