This answer contains spoilers… (view spoiler)[Old question, I see, but I just recently started with this series. The answer is TOTALLY YES. Charley and Cookie? Lorelai and Sookie, definitely. Addiction to coffee? Check. Dialogue, witticisms, popular culture references? Check those too. Albuquerque is no Stars Hollow, though =) But yes, I thought a lot about GG when reading this. (hide spoiler)]
Todd Big nope. But I agree with the Dead Like Me comparison. Just since the plot is all grimreapery.