While my primary martial arts studies may be in the realm of a traditional empty-hand martial art, I certainly study and regard a wild body of fighting skills. Modern combatives are especially interesting to me, and one system I’m working to learn more about is Tony Blauer’s S.P.E.A.R. System™.
Mr. Blauer’s got a reprint of a nice introductory article to the S.P.E.A.R. concept on his website. Give it a read.