Razcal was an attempted beverage from the makers of RC Cola back in the mid nineteen nineties. It was bright blue, raspberry flavored, and had the catch phrase "Nobody Famous Drinks It". It disappeared fairly quickly.
It was probably the best tasting Tasty Caffeinated Beverage I have ever had, and I was greatly saddened to learn of its demise.
One wonders of the current Sprite campaign was at all inspired by this soda.