I love queso anejo. I try to keep a bit onhand all the time, so I can just grate it over salads and things.
Sometimes, if I can't be bothered cooking a full nacho recipe, I'll just grate some anejo over some corn chips and nuke them in the microwave. Fast and delicious.
But, my favorite is a kind of Mexican queso dip with a couple of different cheeses in it. I try not to make it too often, because it uses up a lot of queso anejo and it's kind of expensive here.
But it is delicious!