I do have a semi amusing story:
Before the signing we were told that we weren't allowed to have personal items signed and no pics but one of the Dark Horse booth folks stealthily told us "If you have a comic or something in your hand just give it to them. They'll sign it. But try not to get something that's obviously a personal item like a poster".
Ok I thought. I had just gotten my Goon #7 signed by Eric Powell earlier that morning amd wanted Mike Mignola to sign it too.
So I handed the comic to Mike to sign when I got up to him. GDT was sitting next to him at the booth and Mike said "This has always been one of my favorite covers." GDT said "Oh yeah? Let me see that thing" and took it. He nodded his approval and proceeded to sign it. Mike looked a bit paniced and started to apologize and GDT went "Oh fuck. Did you want me to sign this? I'm sorry."
It was pretty funny. If GDT ever does the "Goon" I'm set: