My wife watches the Roloffs... I cant quite recall the design off hand...
But if you want search terms for similar designs, go for zeigler, sultanabad, oushak, peshuar and agra. If you're looking for similar designs and colors, I would go with jaipur hand knotted rugs, and zeigler designs. There are also some chobi rugs which have dark blue background similar to their rug although more unusual. It all depends on your price point, but all of these rugs for the most part feature large scale prints with similar sort of leaves and scaling although you will find variances in all the above mentioned rugs.
So far as their exact rug goes, it doesn't appear to be anything special. In fact I it looks like a handtufted carpet, probably fairly inexpensive.