Yogi's is also the head I think of as a benchmark in terms of the head I'd want to see every single day. In person too, he is just so quinessentially golden and expressive- what a kind, wise face. I agree about Devin, who Niome mentioned.
For girls, I happen to love Pippa:
http://www.k9data.com/pedigree.asp?ID=257377
I might be biased because of Fenway, but I love the head of Phyler- Sunkota's Phorgone Conclusion( maybe a bit long in ear, but overall there's something ideal about his head to me).
http://www.k9data.com/pedigree.asp?ID=28762
Also, Violet's head& face:
http://www.ripleygoldens.com/Violet%20Page.htm.
I like as close to the standard limit as possible for good backskull and a defined stop with a short square muzzle. I think the heads I love best might not really embody the standard the best- maybe too triangley in the eye and a tiny bit too heavy in flews. After studying the "blue book" for way too many hours, I conlude that I might like a head that is a teeny bit overdone, so I am working on improving my eye. I admit it.
I was raised with two Twin- Beau- D dogs, and that whole style is deeply ingrained.
Faera's Starlight/Thunder lines have heads I love.