Whiskey or Rye and Ginger with lemon or lime.
GOOD vodka mixed with GOOD OJ. Say what you will about mixing high quality spirits, but I buy fresh squeezed OJ (not the from concentrate garbage) to mix with it.
Making a screwdriver with inferior ingredients is a waste of time, and a good way to ruin one of my favorite drinks.

Also;
SHOTGUNNING PBR IS TOTALLY A MIXED DRINK. Also, Old Style Pil.