2 drinks that I like that definitely aren't for everyone, but if you're looking for something different, might be up your alley :
Jack Daniels (or your fav whiskey) and Red Bull - It sounds like a very odd combo, and it is, however I love it. I like whiskey and I'm a Red Bull fan. This drink will get your buzz in from the whiskey but keep you awake and wanting to be the life of the party.
Caipirinha - It's a Brazilian drink that consists of Cachaça (alcohol made of sugar cane) and is created by taking fresh limes, throwing them in a glass, crushing them up a little for the juice (you can cheat by just using lime juice but takes away from the fun of the drink) and then adding sugar and ice. It's a little strong at first, but you warm up to it quickly. It's the official cocktail of Brazil.
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Caipirinha : Cachaca, simple syrup (sugar water), lime
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Damn you, I see you beat me to it!
BTW, while Cachaça can be hard to find (any somewhat big specialty liquor store should carry it), it's quite cheap.