-Yoon-Suin Encounters. Just single page monster + how you meet that monster encounters for Noisms' Weird East setting. You managed to get the whole setting with no maps or demographics or any of the usual connective tissue. Every page creepier than the last. And it was weird how fast crab-men stopped being funny.
-The Fiend Manual: that monster book co-authored by Taichara, Anarchist, and Rolang. Micro-hydras, humor-sucking snakes, and geometric elementals. Rock.
-The Valley of Blue Snails Miscellany. Man, I loved that book--I know a lot of people said it was just what was already on the blog but better organized, but I don't care: random character generation charts, eerie versions of old monsters, and all done with a fuckload of charm, that thing was great
-The Vaults of Nagoh Gigadungeon. The only high-level adventure that really did it for me, and I liked how the only way from one plane to the other was through the dungeon. The Crystal Needle Triarchy terrified my players.
-Tao's Complete Same Universe Wiki. I'm glad they gave him that grant, otherwise it probably never would've gotten it finished. I'm not sure I ever used any of it, but it was comforting to know that if I ever did need a hexmap of Madagascar with random encounter tables and statistically-balanced reactions for each possible encounter, it was there.
-The Thool V. Algol War Sourcebook. Once they got Moebius to illustrate it, it all just clicked. The Pellatarrum Mercenaries supplement definitely had its moments, too--trolls as solidified ooze--definitely stole that one.
-The Fortress of Various Mutilations by Joesky and Telecanter. The ultimate puzzle-grinder dungeon. I know that a lot of people found the hand-photoshopped pictures in the player-handouts disconcerting but, hey, fuck them. And Joesky's read-aloud text was priceless. Many a drunken one-shot was scraped together from bits of this dungeon.
-Jeff's DM Notebooks. Some people bitched about how they were hard to read, but I liked how they just published them flat-out with no formatting or anything. Full of inspirational stuff--it's interesting just to see the process, and the margin notes ("Plasma ferret: y/n?") were gold.