Wine Searcher
There's nothing worse than enjoying something immensely, then losing it forever: a song on the radio, a beautiful girl on the subway, your belief that women don't poop. Fortunately, you'll never have to go through this with wine, thanks to Wine-Searcher.com.
Wine Searcher is an easily browsable online database accessing over 6000* vino stores worldwide. So if you've ever had a bottle that was special to you -- because of the way it tasted, or because of whose boots it facilitated your knocking -- Wine Searcher makes tracking it down as simple as looking up Christopher Lambert's "Notable TV Guest Appearances" on IMDB. Just type in the name of the wine and your location, and you'll get a list of merchants, the number of bottles they've stocked, and a price comparison -- allowing you to squander your rent money in the most cost-effective manner possible.
If wine's not your thing, you can also reconnoiter other spirits -- like that rare single malt you purloined from Dad's liquor cabinet in '93, then mixed with Grape Fanta before doing a panicked "pull and pray" with a JV cheerleader in his bed. No matter what booze you decide to dig up, the W-S will allow you to enjoy it again and again and again, until you can't remember the other things you loved and lost -- like your dream of being able to control your drinking.
*200 are available with the basic service.