You might try BJJ, Brazilian Jiu-Jitsu also known as Gracie Jiu-Jitsu. It dominated the Ultimate Fighting Championship in the early days.
http://bjj.org/
http://www.gracieacademy.com/
Another excellent art is from Israel called Krav Maga. That is the hand-to-hand part. In its' complete form it is Kapap-Lotar. It is not your traditional martial art. It is a close quarters fighting technique resulting in the death of your opponent. It was developed by the Israeli special forces during the formation of Israel and includes hand-to-hand techniques, clubs, knives, and shooting all in one art form. A friend of mine is an instructor. Highly suited to law enforcement and military personel though law enforcement employs a more restricted form due to the limitations on the implementation of letal force.
http://www.kravmaga.com/krav01.html
http://www.avinardia.com/israelcqb.htm
Great article on the history:
http://www.kravmaga.be/pages/originesen.html