I have heard danios seem to be one of the fish of choice or you might you some of the more active tetras. But as I don't have any hider fish in my tanks couldn't tell you from personal experience if they serve the purpose well or not.
have you considered all the types of danios? there's quite a few types about, not just the zebras. mine are really good dither fish and livened up my tank. my shy guppies are not shy anymore!!
i agree with dino, the main point here is what r u trying to bring out of hiding? fish don't hide much nowadays except bettas, however danios r best dither fish whether u like them or not.............