If you are talking about riffs and stuff-hell no! As garhart correctly pointed out, it often sounds a bit corny and I think few managed to do it really well.

However, if you are talking about some brief DITC-style lick or saxophone-stab taken from *that* Jack Bruce album or whatever, I agree that wasn't exactly rocket-science.

However, I always viewed horns used that way more as a complimentary "ambience-tooL" sort of like sampling the "Louder!" from "Long Red" or ESG's "UFO" rather than the "meat" of the beat. And it sounds dope to me, I miss it...