One glass of red wine per day is recommended for heart patients. It has all sorts of beneficial things like tannins, antioxidants, etc etc. Beer also has them to a lesser extent. Liquor doesn't have much in it as far as beneficial substances but the alcohol itself can still be beneficial. Alcohol also serves as a blood thinner and anticoagulant, a cough suppressant (Jagermeister and Robotussin are pretty much the same thing, lol), an anti-microbial/antiseptic, and it is also administered in cases of glycol (antifreeze) poisoning.
http://www.mayoclinic.com/health/red-wine/HB00089
http://en.wikipedia.org/wiki/Ethylene_glycol_poisoning