My dog? No. I adore her beyond what is reasonable, but the fact that such an amazing creature came out of a kill shelter means there are certainly more such remarkable animals in need. It wouldn't be fair to them.
The breeding thing, I kind of get. If you have an animal with very rare genes, or an exceptional animal who is unable to breed for some reason...I get wanting to make that option. Gem Twist, one of the most amazing show jumping horses in history, was cloned. He was gelded (neutered), and from some fairly old, very successful bloodlines. From the information I remember reading, they were working to train and compete the horse as well, not just breed with him. The clone can't be that old at this point - two years, maybe? So it will be a while before anyone knows how it is going to work out.
I did tell my friend just the other day that she needs to clone her stallion so I can have one of him (and geld it young!).