You can also catch him on Friday, May 27th at 1:30 pm, in the panel "Nuts and Bolts of Comics Creation," where he'll talk about how to take a comic book concept from idea to reality, alongside some fellow pros in the industry.
And you can hear him again on Saturday, May 28th at 1:30 pm, in the panel "Rockstar Animals in the Comic Book World," as he discusses having animals as the lead character in a comic book!
It sounds like a great weekend to get your Usagi Yojimbo box sets and books signed! (And while you're at it, be sure to wish Sakai-san a "Happy Belated Birthday"! It was this past Wednesday!)