If you missed out on Okami or the DS sequel, Okamiden, Capcom's upcoming re-release may suit your needs. Okami is currently being remastered for the PS3, with full 1080p HD graphics and PlayStation Move support.
This is all according to the latest issue of Famitsu, as revealed by Twitter sleuth Sinobi (translated by Andriasang). This Okami remaster is planned to launch on November 1 in Japan, for ¥3990 ($50).
Update: Capcom just sent out a press release confirming the news. Okami HD will launch on PSN this fall, replete with PS3 Trophies and optional PS Move support. It will be priced at $19.99.