This is an incredible resource to visualize the linguistic similarities between European languages all on one interactive map.  Just type in a word or phrase as it will translate it for you and place the results on the map.  I just found this, but I think it still belongs on my list of favorite resources.   

Questions to Ponder: Do you see any regions forming?  How does language impact the diffusion of people, ideas and goods?  Hoe do you think these languages diffused?   

Tags: language, culture, English,  diffusion.