I sure do. I can qualify for black at the end of January though I don't know I'll be ready quite that quick.
I take a variation of Aikido called Fan Kan Do. Basically we learn traditional Aikido and a number of other self defense tactics taken from Ju Jitsu, Judo, Shadokahn, Karate, and Kung Fu. Combined it can be very lethal but obviously we prefer the gentle ways of Aikido.
Once I have my black belt in Aikido, I plan to get another in weapons as well. I do some weapon training now and my preferred weapon is the short staff (jo).