The Royle Family special was very good, but I hope they don't do any more. I'd hate to see it become another Only Fools And Horses and keep getting resurrected every couple of years in increasingly awful last-ever-episodes. I hate seeing a great sitcom stretched out beyond its natural lifespan. Last Of The Summer wine is the exception, obviously, but then it was never all that funny to start with, so it's not such a big deal if it isn't funny today. And there's still plenty of time to stop doing the Royles before it becomes an Institution with a capital I.
Sorry for the brief and unilluminating post tonight, it's late and I've got to go back to rotten old work tomorrow.