Well, Jack Daniels' is a Tennessee Whiskey not a Bourbon Whiskey, Keith, which has not so much got to do with where they are distilled, but what the process is...the Tennessee whiskeys get a final charcoal filtration step (I believe). The tennessee types are a bit more like an Irish Whisky with the faintly sweet and very smooth character. Maker's Mark is a popular bourbon with that very smooth finish.
Funny how many dry counties are the locations of distilleries in Kentucky, a testimony to the still huge power of the fundamentalist churches in the area.