Vodka tonic with a slice of lime is one of my default drinks. If I'm out at the right kind of bar (read as: elegant), I will occasionally order a one of the "vodka martini" type drinks (yeah, I know it's an oxymoron) like a Cosmopolitan. However, you have to pick the bar carefully since a) they are usually watered down and b) you may get those "which team is THIS guy playing for?" looks from other guys at the bar.
When I make them at home for parties, they are almost purely alcohol -- the cranberry juice is literally only a splash for color. Ditto for my sour apple martinis -- two shots of vodka + one shot of sour apple pucker shaken with ice, then poured into a sugar-rimmed glass. Add slice of green apple, and enjoy!