I have made lemoncello several times. It is quite good. In fact, I have a batch soaking right now. I ususally pick up a bag of lemons from Sams, zest them, and soak that in a liter of vodka (the recipe I have says to use the cheap stuff), then mix up the simple syrup ( here I used Splenda instead of sugar) and mix them together and filter out the zest first with a fine wire strainer, then repeatedly through several coffee filters, until I can pour the whole batch through the filter without having to stop pouring. I then just bottle it up and put one in the fridge. I tried the freezer, but it didn't have enough alcohol and froze solid.
Afterwards, I juice the lemons and usually just put that juice in a container and freeze it, for future lemonade.
Sorry for the thread hijack.