I've had good experiences with wine, and bad experiences with beer.
I suspect with beer brewing the key is to bypass the kits and go straight to wort preparation from the raw ingredients yourself. I have yet to test this theory though.
As for liqueurs I got a fantastic bottle of homemade kahlua a couple of years ago for Christmas and have been meaning to throw some of my vodka surplus at trying something similar myself, but just haven't gotten around to it.
Anyone tinker with home brewing out there? It's something I've been wanting to take up for a while now and thought this might be a good place to exchange techniques, equipment recommendations and recipes.