http://mustachify.me/?src=http://a1.twimg.com/profile_images...

Really quite impressed with how well it placed the mustache.

I'm guessing this is movember related, maybe you could have options for different types of 'stache?

To test it I just grabbed the first image I found on the New York Times website. It's a pretty good one:

http://mustachify.me/?src=http://i1.nyt.com/images/2011/11/1...