It's like the Walker, Texas Ranger of HGTV. Ubiquitous yet inexplicable. Every time I turn the TV on, it's on. Is there such a vast audience for watching whining childless couples who require three bedrooms and two and a half baths?
What about Chuck Norris as the host of House Hunters? "Don't like this house? How about a roundhouse? I think you'll get a real kick out of it."
Now this I would watch.