australian blue heelers, no question. my family had one when i was growing up, he was my dog and i'll never forget him. i still have a faded pic of him in my wallet, 20 years later. my wife would agree with me too, she had a heeler in thailand (where they are not as common). his name is suparb and he is deaf in one ear so whenever he barks it's twice as loud as a normal dogs bark. took some getting used to. he wanted nothing to do with me either, all business, he wouldn't even look at me when i visited.
definetly greyhounds, and italian greyhounds.
I own an italian greyhound named Kibbles.
My mom used to raise Dobermans so I also have a soft spot for them. We had to give our last dobie away to the Doberman Rescue league last year, i miss him so much he was beautiful:
here is his pic, name Spirit