Anyway, here's some fun stuff:
The web comic Doctor Mystery has a companion piece called Sucker Monster Creatures which is a bestiary of creatures from the former. If you want neat monster descriptions and pictures, check it out.
This Penny Arcade article details Wizards' AD&D 1e reprints. I'd particularly recommend the article, though, because it is AD&D as seen through the eyes of new-wave RPG guys. It hits a lot of the notes seen in places like Grognardia — old-school characters have less power and more freedom, as well as the whole idea that AD&D was more mainstream than modern role-playing. Read the Penny Arcade Report on AD&D.
A few other people have already hit this, but over at Blood Ghost, they just announced the Adventure Time RPG. It's built on the 4e chassis, but try it, you might like it. This includes the core rules and a character generator. It's even Jeff Rients approved.
Finally, here's an article on15th and 16th century underwear for authentic medieval/early modern underwear.
And now for something completely different.