[Puke]

i dunno about that, Yoshinkan Aikido involves alot of tar-beating. its a fairly violent form of an otherwise not-so-volent Do, and is mandatory training for Tokyo riot police.

most other forms of Aikido probably wouldnt be for you. as was suggested earlier, there are lots of places that train in special forces (Soviet, Israeli, US branch of choice) forms. Judo might also be good for you, and several places teach street or 'practical' jujutsu that are mixed with various other forms like you may see on UFC.

You can also find 'practical' schools of Kungfu and other chinese arts, but you have to look pretty hard to do it. popular schools tend to be showy, and lots of 'street fighting self-defense' courses are just BS to make you feel good.

a good rule of thumb is that if something looks cool when its being done, its probably fake. effective arts should leave you wondering what the heck you just saw, because you didnt notice anything significant happening between the start of the technique and the guy hitting the ground.

I would suggest that you pick a couple things and cross train. or of you pick one thing, to study different schools of that one thing so as to see it from different angles. the benefits of cross training are huge.