I had an interesting exchange with sammyndeansgirl a couple of weeks ago where we cast the entire Stepanie Plum movie.

For Ranger, my vote is Rodrigo Santoro

http://handson.provocateuse.com/show/ro drigo_santoro

But if you are interested in our casting selections, it is in the string of comments here:

http://sammyndeansgrl1.livejournal.com/51442.html?thread=1961714#t1961714

It took us a while, but I think we did a good job.