So...because I'm bored as hell right now and have nothing better to do...I compiled everyone's answers throughout this thread and the winner of sexiest dog breed goes to the German Shepherd with 25 votes!!! The Rottweiler was a close second with 23 votes followed by the beautiful Great Dane with 20.
Other breeds people found particularly sexy:
Doberman: 16 votes
Labs: 12 votes
Siberian Husky: 11 votes
I'm sad to report that the Golden Retriever was mentioned only ONCE in this thread so far. Although...someone did mention "retrievers" generically so...maybe I'll count that as 1.5 votes for goldens. Anyway, I'll cast my vote for that beautiful canine bringing its tally to 2.5, putting it WAY behind but whatever...