I love Cognac. I have a bottle of Hennessey XO for very special occasions, it's lasted a couple of years. I also have a Remy Martin VSOP for more common drinking.
Lots of American whiskeys in my bar. Bourbons include Bulleitt, Woodford, Knob Creek and Maker's Mark. Ryes are Bulleitt and Old Overholt (which honestly I like as well as or better than any of the bourbons and ryes mentioned before).
Scotches I currently have on-hand are Oban, Lagavulin, and The Macallan.
Irish whiskey-- just Jamesons.
Gin-- Bombay Sapphire, Hendricks, and Aviator. The Sapphire is my favorite by a pretty wide margin but my i s c & a aggie wife likes the others.
Only vodka I need is Tito's.
I have several tequilas-- Espolon Reposado, Patron Silver, Don Julio Anejo. The Espolon is one of my favorites, tough to beat from a price/taste perspective.
Rarely drink rum but we add it to the egg nog every year so we always have some around, I think it's probably Bacardi.
We also have a bottle of the Brazilian version of rum called Cachaca, I like it quite a bit in the summer muddled with some sugar and lime and maybe a topochico topper.
And then we have all sorts of rando bottles of stuff my i s c & a aggie wife likes to get to make mixed drinks. Elderflower liquer, mellon liquer, etc.
Man after listing it all, that sounds like a lot. It's all tucked into our bar cabinet in our Parlor. I guess we have so much because we end up drinking a lot more wine than liquor, but sometimes you just want a nice pour of the hard stuff.