Through a Facebook campaign, a group called the Surge Movement has been able to get Surge soda back on the market.
For those too young to remember, Surge was Coca-Cola's failed attempt to compete with Pepsi's Mountain Dew. Unfortunately, the citrus flavored beverage failed to catch on with consumers and was taken off the market only five years after its release in 1996. However, Surge soda has always had a strong cult following among those who loved its citrus taste, regardless of its high sugar content (56g).
Surge soda is available as a 12 pack and sold only through Amazon; unfortunately due to high demand they're already sold out, however, you can be notified when it comes back in stock.