I don't know if I can call them my own recipes, but I evolve beers rather than make new recipes. I brew according to recipe, and then once I taste it I add or subtract things to my taste. I am on my 5th batch of porter, it started out as a recipe in a book, and over the next 4 generations I added changed or took away ingredients. I just put it in the kegerator to carbonate on Sunday, and I think it is going to be the best one to date.
At this point I guess I could call it my own recipe, but it is not something I came up with from scratch.