Jujutsu - No standard syllabus so can vary from school to school. Generally though, circles around standing locks and throws. Generally includes fine motormovement throws and pain-based techniques. Done 3 different styles of this and they weren't all that different. Training in 2 was scenario based and technique based in the other.
Judo - come from Jujutsu (aka Jiu Jitsu) - sport form. Standardised syllabus which focuses on throws, hold downs and large limb locks. No experience here.
Karate - Varies from style to style, but for most, standup striking of straight-line nature. Lots of experience here, but you all get the gist of Karate. Thoughts - may not appeal to high grades of other styles.
BJJ - comes from Judo, known for ground grappling. Holds, chokes and large limb locks. Positioning is the key. Will generally appeal to many.
Aikijutsu - Only done a few classes. Found it much to be like Jiu Jitsu, but with a flowing element, like Aikido.
Aikido - never tried, only watched... generally very traditional (for most schools). Primary principle is to use the other persons movement against them in order to throw or lock them. Strikes are often excluded. I'll certainly be interested in this segment.
Wrestling - that's just BJJ isn't it??
hehe, just kidding.
Thai boxing - Ask flyfire
Zen Do Kai - Considered by many as the first free style karate in Australia. Started as Goju but the founder (Bob Jones) found that it didn't work for him as a bouncer, so he added techniques to it, taking from various martial arts. I understand it's got a solid and heavy training method, but I've only read about it.
MMA - Mixed Martial Arts..... who knows. Depends on the instructor. Often based on Kickboxing and BJJ, but it varies.
Iaido - Sword. Very traditional, focuses on that perfect strike.... and that's about the limit of my knowledge there.
Kobudo - Okinawan weaponry. Generally includes weapons such as Tonfa, Sai, Yawara/Kubotan, Bo, Jo, Tanbo, Nunchuku, Kama etc. Done bits and pieces of this, but only a little. Very good fun for beginners, but will be interesting with a room full of them.
Wing Chun - A form of Kung Fu developed by a woman I believe. Focuses on fast punches and trapping with the centreline being the key focus. Done bugger all on this, but the one lesson that Seth taught at the last
meet and greet was really interesting.
Kenpo - A couple of kenpo guys on here far more qualified than I, but I'll post anyway. Generally considered Chinese Karate (later, American Kenpo came too). Much like Japanese karate but with a bigger focus on flow. The throw a lot more strikes with the emphasis on overwhelming the opponent. Body mechanics are more focus than Japanese karate with a lot of thought going into the setup for each technique. Will be a great segment for the Japanese karate buffs.
Arnis - oh that's Kali
... sorry couldn't help myself. I've not done Arnis, but I've done some Kali which has some similarities I believe. Essentially, the use of a rattan stick (or two, or stick and dagger) to attack and defend. Moves are generally fast and many.
Taekwando - A derivative of Japanese Karate with a greater focus on kicks.
Hapkido - Traditional Hapkido is as you described it, large throws and often has high kicks. They concentrate a lot on whip throws and many principles often seen in Aikido.
Jeet Kune Do - Varies from school to school. I've only done it by way of a few seminars and seems to have elements of lots of different systems. A bit hard to quantify this one.
.... and there's a couple I took out cos I know nothing about them.
) 
, iado 
but thats about it as far as practical learning goes.
) not that this seems to be a problem, but im not much for high kicks so need to start working my flexibilty back up.
