I've always enjoyed Newcastle, although I find the quality tends to vary a lot from bottle to bottle.
A Newcastle clone was the first thing I brewed after my 20 year brewing sabbatical ended, and a direct side-by-side taste test with the genuine article was a real eye opener to the power of homebrew. Compared to mine, the real stuff tasted bland and watery, and while it had very little hop bitterness it did have a distinct skunkiness about it. Mine had identical color and the same base flavor, but it had a vastly superior mouthfeel, no skunky smell and a wonderful touch of caramel finish. It just seemed fresh and alive, while the Newcastle seemed lazy and dead. (Mine was a touch more carbonated, which could be a factor.)
Now I'm certainly no master-brewer, I know that for a fact. But if an amateur can make something superior to it's commercial counterpart, in his first attempt after a 20 year layoff, using extract on his kitchen stove, it's mind boggling to think what some of the more experienced people on here must be brewing!