It's been a while since I've done a roundup of interesting things I've found around the net. I'm going to try to make this a more regular thing...
Brendan of Necropraxis posted a d20 turn undead variant. I haven't run the numbers, but I think it would make an interesting alternative. Plus I like the idea that sometimes, even rarely, a midlevel cleric could fail to turn a bunch of zombies or succede in turning a lich.
Chris over at the Hill Cantons posted about using the maps of Pompeii as a megadungeon. I can't tell you how much I like this idea...
Notes from the wizarding world is a tumblr of pictures and story snippets from the world of Harry Potter. Kind of expanded universe type things. It's really well written, and if you're a fan of HP, it's a nice way to get a fix.
One of my favorite movies is Ghostbusters, but I've never gotten to play the RPG. Heck, I've never actually seen a copy in the wild. Today, we're in luck! Ghostbusters International has the rules for the Ghostbusters: A Frightfully Cheery Role Playing Game, and you can get the PDFs here.
If you didn't already know, the Temple of Elemental Evil (T1-4) is free over on DrivethruRPG. I've never played it, or run it, but for that price, it's definitely worth a download. You've got till the 28th to get your copy.
Also, don't look for Bits and Bobs XI. I accidentally used V twice, and only just noticed.