mountain dew

Original (green): Ye ghods, this stuff is good: sort of like 7-up with a caffeine kick, only more so. It was briefly available in the UK, but no longer, sadly: I'm not sure why. Moominmuppet calls this version "panther piss", and despite the appropriateness of the name to the colour, it still hasn't put me off drinking the stuff. Apparently "mountain dew" was once Irish slang for poitín, homebrew whiskey.
Code Red (red, duh): Vile. Has a virus named after it.
Live Wire (orange): This is good stuff, but then it's orange. IMO, this is the only one of the alternative versions which is as good as the original.
Baja Blast (teal): Mountain Dew Does Sprite. Despite looking like Head and Shoulders, it has what the marketing people would call a "fresh" taste; Fin says it tastes teal. For some reason you have to go to Taco Bell to buy this stuff; most of the Mountain Dew I buy isn't with a meal, and it's not good enough to go through the drivethrough simply to buy soda. Oh, and I'd never heard of the place in Mexico, so originally I thought this was called Badger Blast. I suppose Badger Blast ought to be mushroom flavour. (Shake! shake! it's a shake!)
Pitch Black (but actually it's purple): No big deal. Tastes of grapes, which reminds me of cough medicine. If I hadn't heard that the rather pretty black and silver bottle design was officially supposed to be a Halloween thing, I'd have guessed it was just that the designers fancied playing around with redesigning the label, and asked for a flavour to go with a particularly sexy one.
Caffeine free: Erring on the pointless side. The only way Canadians and Australians can get it, poor souls.
Diet, which like all diet drinks tastes like aluminium.