Okay, first, the fact that Father Z remembered that it was Bilbo Baggins birthday, and I did not, is depressing. The Hobbit is a great book, and my kids have enjoyed me reading it to them :)
Second, Father Z. has this in his post:
I wrote to The Professor at the urging of my grandmother (the one who had given me sets of lp records of Shakespeare plays). The professor wrote back. I received his letter, an aerogramme, in September 1973, some days after he had died. In his letter he wrote that he had to be brief because people were waiting for him in the car. He went to Bournemouth and he died that same day. I may have the last thing he ever wrote.
Even having the possibility of receiving the last thing JRR Tolkien ever wrote is pretty awesome. That moves Father Z up a couple of notches in the coolness scale.
Anyways, happy birthday to you, Mr. Bilbo Baggins. May the hair on your toes never fall out.