I mean, a lot.
I mean, when you consider that the man was a philologist, that’s already a specialty type of academic nerdery.
Now, this may not be surprising to avowed Tolkien fans, but for the rest of us who did not sail through The Silmarillion without failing asleep, this is the video for you!
If, for no other reason, you’re a casual reader who never could get what the deal was with Tom Bombadil, you have an answer (and spoiler: it’s not that he was an escapee from a Disney musical).