Oh, tons of my baking uses alcohol. Let's see... Off the top of my head...
From my holiday baking, my fruit cake and rum balls both use a ton of booze.
From my everyday type baking, one of my two apple pie recipes has a little in the filling, while my other apple pie (And all of my other fruit pies, for that matter) have it in the crust. I've got a number of cakes that include alcohol - a chocolate rum cake, an Irish cream cake, and a couple of amaretto cakes. And then we get into toppings - I've got an Irish cream glaze that I put on the Irish cream cake, but I also use the same glaze when I make donuts. There's a chocolate and coffee chiffon cake I learned from my mother that I doctored up to include some booze, too.
For non-baked sweets, bananas foster is pretty fucking epic, either with some nice cinnamon or vanilla ice cream, or served over Belgian waffles with whipped cream. And whipped cream itself can always be doctored up with Irish cream, amaretto, Frangelico, kirsh, applejack, or any number of other liqueurs.
For savory cooking... Well, beer, mead, or hard cider (Depending on the meat, the dish, my mood, and what I've got handy) make great meat simmering liquids. Onions caramelized in a nice low-hops, malty beer go fantastic on a burger, steak sandwich, or pretty much anything else. Beer battering for fish or shrimp or what have you, of course. I've got a great white sauce recipe that uses white wine, which goes great with shrimp, scallops, or (in a pinch) chicken. I loves me some bourbon chicken, too, and while there are recipes without it (since apparently it gets it's name from Bourbon street, not the booze), I find a couple splashes livens it up. A nice red wine peppercorn sauce goes well with a steak.
I'm sure I'm forgetting tons of things. And now I'm starved, and I'm only having leftover enchiladas tonight. Sigh.