Oh, I don't like my original reply lol! I feel the need to expand a bit...
I would say my 2 childhood Aussies were my inspiration for getting Quinn. They were both amazing dogs. Jasmine, the one I lived with (Gemma lived with my dad), in particular was just The Best Dog Ever. She was known around town and the seniors in my grandma's apartment building still talk about what a great dog she was (she passed about 5 years ago). She was a take anywhere dog, bombproof, loved people and kids especially. She never had any issues with other dogs or other animals. She would lead the whole time on a 4 hour trail ride with the horses or sleep all day. She was so smart, knew a ton of tricks, and was the type of dog you could take anywhere off leash and not have to worry. I think all future dogs will be measured up to Jasmine, which isn't particularly fair because she wasn't your average dog. Unfortunately, when it came time for me to get a puppy, the Aussies I was seeing just weren't doing it for me, which made me start to look elsewhere (and settle on an ES).
So yes, while seeing Duffy on True Blood was my inspiration to further look into English Shepherds, it was Jasmine and Gemma that led me to wanting a versatile, stable, all-around herding dog. I wouldn't have been so drawn to English Shepherds if the breed description didn't remind me so much of my Aussies.
For Ned - Traveler was obviously my mom's inspiration LOL. She was actually going to get another Aussie, but when things didn't work out on that front she decided to go Koolie. Due to her health, she was aware of the possibility that this puppy might be her last high energy herding dog (what she's always had), so she figured go big or go home!