Jumper. I just find it more exciting than the hunters and without so many "silly" rules if you will. I've always wanted to give barrel racing a serious try but I'm told it's more or less for girls where I live. (I have done some barrel racing, for fun, in English tack and had a blast!) :)
I work in racing but for my own horse, if you call it a discipline... I just hack around the fields and road and enjoy him :) My little girl is starting hunter lead rein.... which I suppose is sort of my discipline as well since I get to dress up in the goofy outfit and lead her.
Wish I could get back into dressage... don't have the money for it though :(
I do Reining, Jumping, Sorting/penning, and trail riding. I ride in these disciplines because its fun! I really want to advance my riding in Jumping and Reining. A discipline I want to be in is Barrel Racing :P. I discipline that I want to be in, but can't is racing. I'm way to tall to be a jockey (5'7...lol) but it seems like it would be so awesome but I guess barrel racing might be better!
Well I used to do western pleasure/hunter under saddle style riding. Now I trail and arena ride western. But I still make sure my horse knows his body parts, stuff that was neccessarry for showing but not really for trail ride like pivots, side passing, leads, half-passing, speed control, giving to the bit. I don't just get on and go ALL the time :)
There's a lot I'd love to do! Dressage is at the top... It's so beautiful, but too expensive. I'd also love an Arabian endurance horse. The extreme cowboy race... Barrel Racing would be awesome! I think my horse would actually be good at that, he's fast! My arena just isn't proper for it. Reining and cutting are also amazing.
I've attempted SHORT jumps, but my position was horrible... I'd never want to do jumpers, that's too scary for me!