Not long ago I discovered a bourbon I like quite a bit from Virginia, "Bowman Brothers Bourbon". Not overly expensive (less than Knob Creek) and very smooth. I have a friend who deems himself a whisky connoisseur, who believes it's equally as good as others he spends hundreds on. Virginia bourbon is considered heresy around these parts, but I do like it quite a bit.
For regular common place whisky drinking, I find George Dickel bourbon difficult to beat, especially at its price. It's distilled only about 50 miles from where I live, in friendly Tullahoma, Tennessee, which only adds to my enjoyment.
You can't go wrong with anything from the Jack Daniels distillery. If you're feeling like trying something better than average, their Gentleman Jack is very good, and their single barrel Jack is outstanding.
Of course, there's also Woodford Reserve, a good standby for when you want to show someone that you know a little more than the average bear about whisky.
Another whisky that's getting a lot of attention from the connoisseurs around here is Four Roses Single Barrel. I've tried it and personally don't get it, but I know some people who love it.
I'm sure you probably already know this, but just in case, the "single barrel" notation means that the whisky was distilled and bottled from the same barrel. It wasn't mixed with other barrels as other, less expensive whisky's. For some, that makes a huge difference For me, I personally don't care. I'm more focused on how the whisky tastes than how it was made, and I've had some single barrel whisky that should've been used to remove paint, instead of being sold as drinkable.