For the second straight year, I helped judge (though I was terribly late) the One Page Dungeon Contest (aka 1PDC). For people that run RPGs, this contest is a gold mine of ready made adventures and campaign ideas.
The contest has been run for several years now by my good friend, Alex Schroeder. Check out this year's winners here: One Page Dungeon Contest Winners Announced. There are many spectacular entries, and those that did not win are definitely worth a look too.