I studied Shotokan as a young'un. I sucked at it, but a few of the strikes have stayed with me. My father was a Marine and spent some time teaching me some of the things he learned in boot camp. In college I studied Aikido until I tore up my shoulder for the first time. I remember quite a bit of the Aikido and I do try to practice periodically, but I'm good at it only in comparison to people who haven't studied any martial arts.