i havent started any yet, but im teaching myself (with the help of martial arts instructional videos) wing chun, jeet kune do and probably aikido as well after, just to try it out and see if im interested in it long enough to go to a dojo and learn from a teacher

I practiced Tae Kwon Do when I was small but I stopped after a year cuz the dojo moved location. I then took up Iaido for a year but I had to stop cause studies got in the way =S
By the way, although Iaido focuses on drawing the sword, that doesn't mean its not useful. Many sword fights are often finished in either the first or second stroke, and who carries a sword without a sheath anyways? You'll always have to unsheathe it first.
Anyways, back on topic =P Ive learned a bit of karate from my friends (they ALL do karate, either kyokushin or shotokan) and Im planning to take up kyokushin karate myself next month.

i am in my own type of martial arts.. even though i have not completely mastered it yet..

Taekwondo, Muay Thai kickboxing, ground fighting. I tried Ninjitsu once while in Japan and didn't like it.

Iv done Krav Maga for a while, and iv just started Kyokushin Karate.

空手道= "Karate-do"(japanese) = "Kon Soo Do"(korean)
唐手道= "Karate-do"(japanese) = "Tan Soo Do"(korean)
origin is Okinawa karate, so does "Tae Kon Do "

合気道=　"Aiki-do"(japanese) = "Hapkido"(korean)

剣道=　"Ken-do"(japanese) = "Komdo/Kumdo"(korean)

All these have their origin in japan, the korean words are made after the era of japan empire.

You may want to look a bit deeper in to the origin of Tan Soo... it takes a heavy Chinese form, mostly the "Southern Boxing" form... And Tan Soo from Japan is what originated the current day various style Karate

Goju Ryu Karate

While that's all very true... who carries a sword anymore?

In my opinion, the best reason to study an art like Iaido is to preserve it and the surrounding traditions. That's totally reason enough for me, though. Power to ya for keeping it all alive ;) .

Well... Yakuza, for one. :D