A 33-volume collection of award-winning oneshots put out by Kodansha from 2002-2012. Some of these would later get serialized or collected in other volumes. Click here for the full list (.txt).
Serialized or otherwise collected:
AKABOSHI Tomo Shishunki Syndrome
AKIZUKI Risu Oku-sama Shinkaron
ARAI Hideki 8-gatsu no Hikari
ARAMAKI Keiko GENOMES
ASADA Torao Spoonman 3.18…