Director James Cameron is now the record holder for deepest solo dive after his submarine, "Deepsea Challenger" made it to the bottom of the Mariana Trench a couple hours ago. The sponsors of the expedition are James Cameron, Rolex, and National Geographic making me think this will turn into a film someday. Another fact which makes it seem like I'm making this all up, which I'm not, is Paul Allen is live-Tweeting the entire thing.
I've been holding on to this really amazing interactive infographic of the Mariana Trench for a long time, and now is the perfect time to share it. The deepest part of the Trench is called Challenger Deep, a name Tolkien certainly would have created if he'd ever finished his pirate adventure.