This is an old one, but I've never seen it. Michael Gray on Twitter noted that when you do walking directions in the (not new) Google Maps from The Shrine to Mordor, you get a funny response from Google.
Yes, Google says, "Use caution - One does not simply walk into Mordor. Clearly a fan of The Hobbit.
This does not seem to work on the new Google Maps.
Forum discussion on Twitter.