Whisky Catalog: because geeks like fine spirits, too.
Like any other good database app, Whisky Catalog makes adding entries a snap. Flag a whisky as owned or just tasted, bookmark your favorites, and put 'em on a wish list. You can even export your data to CSV -- in case you wanted to whip up some fancy presentation charts in Excel, for example. Hey, if you're going to geek out with your whisky, why not go all the way?
... And while we're on the subject of whisky, don't forget about social network/review site Connosr.