My tastes are generally simple, though I will have any number of special cocktails from time to time.
I really am a beer drinker -- I like the range of heavy beers and ales, etc. but generally fill up on the beer before I get a good buzz on. If the buzz is a goal for the evening (no driving ahead) my standard base drink is a Kettle One or Sky Vodka on the rocks with plain carbonated water with a wedge of lemon or lime. Clean, simple, and with the proper hydration before bed, low impact the next morning. With certain buddies, any number of tasty but hangover inducing shots may be in order.
In the summer I like a refreshing shot of Jim Beam in a tall water glass filled with with ice cubes and tap water (perhaps even carbonated water if I'm feeling frisky) as a beer alternative. Light, refreshing with a touch of whiskey flavor. Use a generous pour if I want the added kick.
Gin and Scotch are only now, after 20 years, becoming palatable again. Peppermint Schanpps is not quite there yet.
For those truly looking for adventure, try Malort on the rocks
http://www.cocktaildb.com/ingr_detail?id=577 Perhaps the worst tasting liquor ever fermented. The after taste is literally that of vomit, post dry heave specifically -- I kid you not. You know, some people will drink something awful and say, "that makes me want to vomit" or, "that tastes like vomit." Well, this ACTUALLY does -- it's not just a figure of speech. But some have acquired this taste. It's good to have behind the bar as a "shocker"
Try a shot of this...
Charon
