I attended the MO-KAN Comic Conspiracy this weekend. I enjoyed it. The guest list included all the artists involved in creating Groo comics! I sat directly across the aisle from Sergio Aragones and visited with him a bit to tell him that MAD magazine helped form my personality. (He and Al Jaffee were my absolute favorites.)
I've always been a Groo fan. I had a letter printed in issue #88, from 1992. I brought the book to the con and it was signed very graciously by everyone-- Sergio Aragones (storyteller/artist), Mark Evanier (wordsmith) , Stan Sakai (letterer, and Usagi Yojimbo creator!), and Tom Luth (colorist). Great and friendly guys, everyone.