Go ahead and snicker, but we both know that if "Alf" creator/pupeteer/voice-actor Paul Fusco gets his way and a new movie gets off the ground a lot of us are going to go see it.
I don't know that "Alf" (it means "Alien Life Form") has the kind of longevity that other properties have had - i.e. I don't know that anyone born after it went off the air knows/cares that it ever existed; but the basic pitch was "What if E.T. stuck around, and was a sarcastic pain-in-the-ass?"
Part of the running joke of the series was that we only ever heard about Alf's (real name: Gordon Schumway) destroyed homeworld of Melmac through his own second-hand accounts, and the descriptions vacillated between the entire civilization being as boorish/silly as he was and the occasional bit of unexpected depth or pathos - at one point we learn that Alf/Gordon was some sort of soldier; an "orbital guard" who was spared because he was offworld when Melmac exploded. (I recall that actual cause of the destruction is alluded to have been either a nuclear accident or conflict; though at least once Alf's answer was "we all plugged in our hairdryers at the same time.) Presumably, a feature film would expand on that sort of material in some way.
If it happens, this would be the second "Alf" movie. The original series was canceled after ending on a cliffhanger where Alf is finally captured by government alien-hunters, and wasn't "resolved" until a terrible TV movie called "Project: Alf" many years later.