This stuff was the worst but I kinda liked it...

Back in December 2008, MillerCoors voluntarily removed caffeine, taurine, guarana, and ginseng from energy drink Sparks, due in part to pressure from San Francisco City Attorney Dennis Herrera. Hipsters everywhere lost their collective shit. The overly sweet malt liquor/energy drink hybrid saturated the fabric of many a party flannel. Subtract the caffeine and all you have left is a really gross drink, instead of a really gross drink that makes you stay up really, really late.

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http://blogs.sfweekly.com/foodie/2009/11/the_sparks-speriment_how_to_ma.php