I found the link to Posemaniacs on Kathy Johnsons blog, The Quicksilver Workaholic. It is an absolutely fantastic resource. You can jump right into using the poses or use Google translate to figure out what the japanese text is about.
I have a copy of Virtual Poses that I have yet to use. Since I spend long hours on the net/computer I am likely to use this resource more often.
A few quick links on the site
A variety of poses which you can rotate 360deg on both axis.
Short poses and gesture drawings - 10, 15, 30, 45, 60 and 90sec poses
Update: September 13, 2007: I've just received a comment from the site owner for Pose maniacs
Today I added English instruction to 30 seconds drawing and random pose viewer pages.