Onkels und uncles

Oh and one little remark in English, especially for you, Dana, since you're probably the only American reading this blog: there's an underground station somewhere further away in west of Berlin, called Onkel Toms Hütte, meaning Uncle Tom's Cabin. What!? Well they've seen some effort, renaming the formerly Nazi-associated U-Bahnhofs, but still this strikes me somewhat odd...