I really liked Crystal Pepsi.
Also, does anyone remember 7-Up Gold? It was like 7-Up mixed with ginger ale and was absolutely delicious. It was tested and then disappeared.
It may have only been tested in Colorado, where I lived at the time.
I loved the Marathon candy bar when I was a kid. No relation to the UK bar, it was more like the UK's Curly Wurly, but not quite the same. It was very popular in the 70's, but was discontinued in about 1981.